Announcement

Collapse
No announcement yet.

More VRAM helps a lot with DCS VR performance

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #61
    Originally posted by Alec Delorean View Post
    Don't forget that this is running more than 4K resolution for each eye. Given that, it's a pretty normal VRAM usage. Running the game on just one 4K display should be a bit under 10/11GB in all situations.

    Well again I'm pushing ~11m pixels with my reverb at 125% and only using 5.5-6GB. It's not coming anywhere near 10 on my system.

    Comment


      #62
      how do you see the vram useage?
      7700k @5ghz, 32gb 3200mhz ram, 2080ti, nvme drives, valve index vr

      Comment


        #63
        Originally posted by eatthis View Post
        how do you see the vram useage?
        MSI afterburner has a gpu.dll monitor plugin that will monitor per-process VRAM usage.

        https://www.reddit.com/r/nvidia/comm...y_per_process/

        Comment


          #64
          There is definitely an issue with the F10 map and or tac command access in MP.

          Reported by multiple users in VR across multiple servers.

          You can go from a locked 40fps to 20, or even more interesting from an 80 to 40fps in the tac command F10 map view, all with until a week or so ago a top end system (re 2080ti).

          Can be in a mission, solid fps. Go into tac command, go back and respawn at exactly the same airfield, same aircraft, same mission, same loadout and suddenly fps is half of what is is. Nothing else being ran on PC.

          Frustrating doesn't even cover it.

          Interestingly enough sometimes this can be cleared by opening say task manager or another program on pc and tabbing back into dcs and framerates restored.

          There is an issue with memory and how DCS handles it. I've yet to see a convincing explanation of the use of RAM and page file from a dev and how preload handles this. Come to think of it i've yet to see a detailed explanation on bloom effect, mask size, terrain texture and all the other graphics settings. The best is when new option's just appear without any explanation. Below acceptable communication to be honest.

          The bottom line is, and lets not cloud the issue, the core engine is basically not fit for purpose for prolonged play it screws up when using tac command in MP servers. We should all be asking as a community not when the next module is out but when they are going to sort out DCS Core Engine and netcode, hell i'd even pay for a DCS VR module if they had to fund extra resources to get this better and more stable. This is a poor optimization and architecture issue, not a hardware problem (so much so i ruled this out after buying a custom gaming pc from Scan UK purely to use for what is one of my main hobbies re DCS, i've not even had email or office installed to ensure no other software conflicts).

          Yes i can run DCS at a solid locked 40fps (rift s) but when the memory leak or whatever causes the game it can be low 20's and degenerate's into a poor experience. Note closing down the game and loading the exact same point in the exact same cockpit and back to a solid 40fps.

          Whilst i'm fortunate enough to be able to upgrade to the newer series of cards, this is absolutely not acceptable in that a solution is paying for headroom because of long standing memory issues that are not being resolved. I also have a lot of sympathy for those not as fortunate as myself, who no doubt saved up for their 2080ti, 2080 or whatever expecting ED to deliver their side of the deal. Its buggy as hell. It is for me, the number one thing that needs resolution.

          I'm wanting to upgrade to the G2 but i'll be honest i just dont know if DCS will be a worse MP experience with it than a Rift S given the current unreliable state of the core engine and given that this will place more demands on the system.
          ---------------------------------------------------------------

          DCS | F14B | AV-8B | F18C | F16C | A10C | JF17 | Viggen | L-39 | MIG 15 | SU27 | SU33 | F15 | MI8 | Huey | KA50 | Gazelle | P47 | Spitfire | CA | Persian Gulf | Nevada | Normandy | Channel | Syria

          Liquid Cooled i7 9700K @ 5Ghz & OC RTX2080 Ti Ultra | 64GB DDR4 3200 MHz | 500GB SSD m2 | Oculus Rift S | TM Warthog | Virpil T50/Warbrd Base | Cougar MFD | Saitek Side Panel | Steel Series Arctis 7 Heaphones

          Comment


            #65
            Originally posted by Hawkeye_UK View Post
            I'm wanting to upgrade to the G2 but i'll be honest i just dont know if DCS will be a worse MP experience with it than a Rift S given the current unreliable state of the core engine and given that this will place more demands on the system.
            It won't be worse. It won't be better but it won't be worse.

            Mine ran just as fine? Poorly? On my 2080ti as it does on my 3080 with a G1 Reverb.

            Comment


              #66
              Originally posted by FoxTwo View Post
              Well again I'm pushing ~11m pixels with my reverb at 125% and only using 5.5-6GB. It's not coming anywhere near 10 on my system.
              I’m mostly above 10Gb, 10,3-10,7 (out of 11).

              I did use 125% SS before and went up to 150%.
              I dont think its SS alone, but other Dcs graphic settings affect as well.
              [T.M HOTAS Warthog Stick & Throttle + T.Flight pedals, HP Reverb pro, Oculus Rift( Pimax 8KX incoming) ]
              [DCS Mirage 2K; Huey; Spitfire Mk IX, AJS 37, F-14, F-18, FC3, A-10 Warthog II ]
              i9 9900KS@5.2/32Gb@3200/ ASUS ROG STRIX RTX2080ti OC 11Gb @2080Mhz(ASUS ROG STRIX RTX3090 OC incoming) ASUS STRIX Z390-F , 2Tb m2 NVMe

              Comment


                #67
                Originally posted by Gunnars Driver View Post
                I’m mostly above 10Gb, 10,3-10,7 (out of 11).

                I did use 125% SS before and went up to 150%.
                I dont think its SS alone, but other Dcs graphic settings affect as well.
                Very likely. I'm at 2x MSAA, preload around 70k and medium visibility. No heat effects, low shadows.

                My hitching/stutters are way down, as is my memory usage. I haven't noticed an actual visual difference in the actual game. I still don't pull more than 45 fps thanks to motion smoothing but the game is fine otherwise.

                I think a big part of this is not really understanding what each setting in the game actually does and what kind of impact it has or what the requirements are. It's very obfuscated, probably because it's (poorly) translated from russian to english.

                Comment


                  #68
                  @FoxTwo

                  Try these settings to push over your VRAM limit. This is basically the highest visual quality for VR that you can achieve with a crowbar and the 3090 just eats it without complaining. It's 18.4m pixels with max settings on nearly everything. https://forums.eagle.ru/showpost.php...3&postcount=57
                  Last edited 10-16-2020, 07:36 AM.
                  i9 10920X @4.8GHz, 3090 OC, 64 GB RAM @3600, Valve Index, HOTAS & Rudder: all Virpil with FFB base mod (G940)

                  Comment


                    #69
                    Originally posted by Alec Delorean View Post
                    @FoxTwo

                    Try these settings to push over your VRAM limit. This is basically the highest visual quality for VR that you can achieve with a crowbar and the 3090 just eats it without complaining. It's 18.4m pixels with max settings on nearly everything. https://forums.eagle.ru/showpost.php...3&postcount=57
                    Yeah no I mean, I'm sure you can overload the GPU VRAM with settings that's... I mean I'm not questioning that. I'm questioning whether or not that actually has much of a visual impact or is even necessary.

                    Can you get DCS to use more than 10GB of VRAM? Not surprising if the answer is yes. Does it reasonably need to? That's the better question.

                    I'm having a smooth, stutter free experience with only 10GB of VRAM and utilization shows well under that in multiplayer situations (tested on hoggit's PGAW and GAW).

                    Comment


                      #70
                      Since the latest series of updates, going back I believe to the big upgrade with lighting effects ect I can maintain smooth stutter free (caveat is first and second sorties only before I need to exit and reenter DCD) but only because I finally dialed back my SS and PD to a point where I’m disenchanted with the visuals again. I can get a beautiful clear picture, but way too many hops stuttters and smears.
                      Quite frankly I’m torn between going after a 3090 when available or just plain giving up. What I find equally if not more frustrating is that I search and find maybe a handful of servers with more than 15 players so I end up floating along alone for an hour before I get bored and Log out.
                      Obviously I should probably join a squad but I’m not in a position to participate regularly.
                      All my issues I know but 15000 posts a day and 15 flyers. Maybe I’m missing servers???
                      Regards
                      I9 (5Ghz turbo)2080ti 64Gb 3200 ram. 3 drives. A sata 2tb storage and 2 M.2 drives. 1 is 1tb, 1 is 500gb.
                      Valve Index, Virpil t50 cm2 stick, t50 base and v3 throttle w mini stick. MFG crosswind pedals.

                      Comment


                        #71
                        Originally posted by FoxTwo View Post
                        I'm questioning whether or not that actually has much of a visual impact or is even necessary.

                        Can you get DCS to use more than 10GB of VRAM? Not surprising if the answer is yes. Does it reasonably need to?
                        There’s a quite big difference between the first gen VR sets and the latest when it comes to what settings that actually makes a graphic difference.

                        Some settings make a big difference and you only lower them if needed, but also put a high strain on the CPU/GPU and increase the RAM usage.

                        Visibility range = you like as high as possible, but it bite the HW.
                        Threes visibility, to see them grow in front of you isnt fun so you like that setting maxed out if possible.

                        There are some settings where I dont clearly see any difference in the graphics so these I try to not max out.


                        For me with a 2080ti 11Gb Im VRAM limited in some cases. I have lowered some settings to not get the allocsted VRAM to reach 11Gb. I have seen stutter without the CPU/GPU at 100% but VRAM 10.9 or so, and after changing settings that got the reported VRAM use lower the stutter dissapeared. While I cant be sure that is was (only) VRAM shortage that caused this, it was enough for med to not select a 3080 due to the 10Gb only reality and Ill het my 3090 next week.
                        [T.M HOTAS Warthog Stick & Throttle + T.Flight pedals, HP Reverb pro, Oculus Rift( Pimax 8KX incoming) ]
                        [DCS Mirage 2K; Huey; Spitfire Mk IX, AJS 37, F-14, F-18, FC3, A-10 Warthog II ]
                        i9 9900KS@5.2/32Gb@3200/ ASUS ROG STRIX RTX2080ti OC 11Gb @2080Mhz(ASUS ROG STRIX RTX3090 OC incoming) ASUS STRIX Z390-F , 2Tb m2 NVMe

                        Comment


                          #72
                          For me it's running the game at 2x 2880x3200 pixels, 4x MSAA and extreme visibility range. Looks fantastic and no doubt this will work great on any future VR HMD with higher resolution panels than the current gen.
                          i9 10920X @4.8GHz, 3090 OC, 64 GB RAM @3600, Valve Index, HOTAS & Rudder: all Virpil with FFB base mod (G940)

                          Comment


                            #73
                            Originally posted by Gunnars Driver View Post
                            There’s a quite big difference between the first gen VR sets and the latest when it comes to what settings that actually makes a graphic difference.

                            I'm running a Reverb, I know what the latest gen headsets look like.

                            Comment


                              #74
                              Originally posted by FoxTwo View Post
                              I'm running a Reverb, I know what the latest gen headsets look like.
                              Yes. Not to learn you how it looks but its essential for the question if the settings actually make a difference you can see or not.

                              I probably missed that part about Reverb in your post.

                              For this thread, nvidia say they have a mor efficient use of the VRAM in 3080 compared to the 20X0 generation so 10Gb is said to not be less than 11Gb in 2080. Im not convinced so I went for 3090.
                              [T.M HOTAS Warthog Stick & Throttle + T.Flight pedals, HP Reverb pro, Oculus Rift( Pimax 8KX incoming) ]
                              [DCS Mirage 2K; Huey; Spitfire Mk IX, AJS 37, F-14, F-18, FC3, A-10 Warthog II ]
                              i9 9900KS@5.2/32Gb@3200/ ASUS ROG STRIX RTX2080ti OC 11Gb @2080Mhz(ASUS ROG STRIX RTX3090 OC incoming) ASUS STRIX Z390-F , 2Tb m2 NVMe

                              Comment


                                #75
                                dcs does not even free up vram if you go back to main menu and reload a mission. only way to free vram is to restart the game.
                                it's been that way forever and i've done a lot of testing on this. it's generally good practice to restart the game before you load into a mission.

                                if you are in the editor and test a mission, then go back change the season and playtest again all texture data from the other season will still be held in vram. it's madness. i suspect that it's the same for object textures that are not even part of the new mission you are loading in.

                                the excuse we get is, that it's just vintage code, but not clearing vram when you reload a mission? that's seems to me like laziness and nothing more...
                                My personal wishlist after 2 years with dcs: https://forums.eagle.ru/showthread.php?t=216873

                                Comment


                                  #76
                                  Originally posted by twistking View Post
                                  dcs does not even free up vram if you go back to main menu and reload a mission. only way to free vram is to restart the game.
                                  it's been that way forever and i've done a lot of testing on this. it's generally good practice to restart the game before you load into a mission.

                                  if you are in the editor and test a mission, then go back change the season and playtest again all texture data from the other season will still be held in vram. it's madness. i suspect that it's the same for object textures that are not even part of the new mission you are loading in.

                                  the excuse we get is, that it's just vintage code, but not clearing vram when you reload a mission? that's seems to me like laziness and nothing more...
                                  That's exactly whats going on. Simply switching to another aircraft just adds data to VRAM without purging the unnecessary data from the former aircraft.
                                  i9 10920X @4.8GHz, 3090 OC, 64 GB RAM @3600, Valve Index, HOTAS & Rudder: all Virpil with FFB base mod (G940)

                                  Comment


                                    #77
                                    Originally posted by Alec Delorean View Post
                                    That's exactly whats going on. Simply switching to another aircraft just adds data to VRAM without purging the unnecessary data from the former aircraft.
                                    Of course this is badly handled by DCS but as long as it doesnt affect the gaming ”in flight” I dont mind. I do not think I have seen VRAM usage be higher after I switched aircraft and is flying it?
                                    [T.M HOTAS Warthog Stick & Throttle + T.Flight pedals, HP Reverb pro, Oculus Rift( Pimax 8KX incoming) ]
                                    [DCS Mirage 2K; Huey; Spitfire Mk IX, AJS 37, F-14, F-18, FC3, A-10 Warthog II ]
                                    i9 9900KS@5.2/32Gb@3200/ ASUS ROG STRIX RTX2080ti OC 11Gb @2080Mhz(ASUS ROG STRIX RTX3090 OC incoming) ASUS STRIX Z390-F , 2Tb m2 NVMe

                                    Comment


                                      #78
                                      @Gunnars Driver

                                      This also maybe interesting for you.
                                      Attached Files
                                      i9 10920X @4.8GHz, 3090 OC, 64 GB RAM @3600, Valve Index, HOTAS & Rudder: all Virpil with FFB base mod (G940)

                                      Comment


                                        #79
                                        Originally posted by Alec Delorean View Post
                                        @Gunnars Driver

                                        This also maybe interesting for you.
                                        Yes, Ive noticed it.
                                        Regulary seing close to 11 out of 11. In fact I have reduced settings to lower the VRAM use/allocation and I think it made me see stutter less often.
                                        In missions I sometimes see RAM up to 27-28 Gb.

                                        And of course, I see low usage in FS2020 but its not 3D double frames(yet).
                                        [T.M HOTAS Warthog Stick & Throttle + T.Flight pedals, HP Reverb pro, Oculus Rift( Pimax 8KX incoming) ]
                                        [DCS Mirage 2K; Huey; Spitfire Mk IX, AJS 37, F-14, F-18, FC3, A-10 Warthog II ]
                                        i9 9900KS@5.2/32Gb@3200/ ASUS ROG STRIX RTX2080ti OC 11Gb @2080Mhz(ASUS ROG STRIX RTX3090 OC incoming) ASUS STRIX Z390-F , 2Tb m2 NVMe

                                        Comment


                                          #80
                                          Originally posted by Gunnars Driver View Post
                                          And of course, I see low usage in FS2020 but its not 3D double frames(yet).
                                          Yep, this will be very interesting...
                                          i9 10920X @4.8GHz, 3090 OC, 64 GB RAM @3600, Valve Index, HOTAS & Rudder: all Virpil with FFB base mod (G940)

                                          Comment

                                          Working...
                                          X