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[ RESOLVED] FPS drop with RADAR ALTIMETER on.


Sawydz
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Yes, still present on open beta 2.5.4.29585

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  • 3 weeks later...

Can't be true that Razbam does not want to fix that annoying issue...

 

It's on their bug tracker, so how do you reach that conclusion?

bug.thumb.PNG.babe045cf214d2569b740604deafd207.PNG

i7 - 9700K | 32 GB DDR4 3200 | RTX 2080 | VKB Gunfighter Mk II /w MCG Pro | Virpil T-50CM2 Throttle | TrackIR 5 | VKB Mk. IV

 

AJS-37 | A/V-8B | A-10C | F-14A/B | F-16C | F-18C | F-86F | FC3 | JF-17 | Ka-50 | L-39 | Mi-8 | MiG-15bis | MiG-19 | MiG-21bis | M2000-C | P-51D | Spitfire LF Mk. IX | UH-1H

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I don't know, I am not a programmer. Are you?

i7 - 9700K | 32 GB DDR4 3200 | RTX 2080 | VKB Gunfighter Mk II /w MCG Pro | Virpil T-50CM2 Throttle | TrackIR 5 | VKB Mk. IV

 

AJS-37 | A/V-8B | A-10C | F-14A/B | F-16C | F-18C | F-86F | FC3 | JF-17 | Ka-50 | L-39 | Mi-8 | MiG-15bis | MiG-19 | MiG-21bis | M2000-C | P-51D | Spitfire LF Mk. IX | UH-1H

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Then you know more than me, I couldn't tell how long this problem takes to properly identify and finally fix. Kudos to you, I guess.

i7 - 9700K | 32 GB DDR4 3200 | RTX 2080 | VKB Gunfighter Mk II /w MCG Pro | Virpil T-50CM2 Throttle | TrackIR 5 | VKB Mk. IV

 

AJS-37 | A/V-8B | A-10C | F-14A/B | F-16C | F-18C | F-86F | FC3 | JF-17 | Ka-50 | L-39 | Mi-8 | MiG-15bis | MiG-19 | MiG-21bis | M2000-C | P-51D | Spitfire LF Mk. IX | UH-1H

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I tried to replicate that bug, but I can't.

 

 

I used Instant Action/ Take Off mission.

 

 

I flew low level, turning Rad Alt On/ Off, I climbed from low altitude with Rad Alt On to above to 10 000ft, then back down to 500ft, I landed with Rad Alt On...my FPS never changed.

 

 

I will try in more populated environment...

 

 

Windows 10, updated Open Beta, I7 7700K, MSI GTX 1080Ti updated drivers, 32Go RAM and running on SSD.

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I tried to replicate that bug, but I can't.

The old behaviour was ...

 

With the RAlt on,

FPS was normal initially

but after time/flight at altitude (20 min ?)

FPS would fall when near the ground

FPS would recover if the RAlt was turned OFF and back ON.

IIRC the old behaviour was repeatable i.e. you could fly another 20 min before FPS would drop again

 

I'm not sure if/how the behaviour changed in 2.5.4.x

 

It's possible you'll need to be airborne for a while to see the bug or perhaps it was a DCS issue that's been fixed.


Edited by Ramsay

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The old behaviour was ...

 

With the RAlt on,

FPS was normal initially

but after time/flight at altitude (20 min ?)

FPS would fall when near the ground

FPS would recover if the RAlt was turned OFF and back ON.

IIRC the old behaviour was repeatable i.e. you could fly another 20 min before FPS would drop again

 

I'm not sure if/how the behaviour changed in 2.5.4.x

 

It's possible you'll need to be airborne for a while to see the bug or perhaps it was a DCS issue that's been fixed.

 

Yes, I missed that. I have been advised MP and will test accordingly. :thumbup:

It doesn't really matter though :D


Edited by jojo

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  • 1 month later...

Any news on this bug being worked on?

Got the Mirage recently and this is happening every time I play the mirage, for the first 20m or so of the flight I can use the radar altimeter, after that as long as it is on my frames drops from 60 to 12 until I turn it off. And the off/on thing doesn't fix it for me, need to get a new plane for that.

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  • 3 weeks later...

Went for two longish flights getting comfortable with the enw HUD/PCA behaviour: no FPS drop with radar altimeter on. Will try out longer missions in MP, where I had the problem the most often, and report again.

i7 - 9700K | 32 GB DDR4 3200 | RTX 2080 | VKB Gunfighter Mk II /w MCG Pro | Virpil T-50CM2 Throttle | TrackIR 5 | VKB Mk. IV

 

AJS-37 | A/V-8B | A-10C | F-14A/B | F-16C | F-18C | F-86F | FC3 | JF-17 | Ka-50 | L-39 | Mi-8 | MiG-15bis | MiG-19 | MiG-21bis | M2000-C | P-51D | Spitfire LF Mk. IX | UH-1H

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  • 2 weeks later...

New to the Mirage and only had some short SP flights to date.

Today I did a longer SP flight at high altitude.

Coming in for approach at Fujairah on PG map getting below I think 5000ft, which would be engaging radar altimeter height, my in cockpit frames dropped to 3 to 5.

F2 outside view everything was fine. Managed to get up to higher alt and in cockpit frames where back to normal. Tried the approach three times and got always the same, so I quit the mission in air.

 

I'm on stable branch DCS/2.5.5.33184.

 

Will see if it's repeatable and will try switching off radar altimeter to see if this helps.

 

Regards

Jens

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Hello,

 

so I repeated same kind of mission.

Please find trackfile attached and some more details in the zip-file here: track, log, mission and screenshots

 

Radar altimeter was set to on from the beginning.

I spent some time trying to refuel at 20.000ft.

After that I descended to below 5000 feet. At first frame dropped just a bit. I think from about 60 to 40. Switching off radar alt brought back the lost fames.

While descending lower and lower and approaching I repeatedly switched the radar altimeter switchon and of again.

With radar alt on, frames dropped to 12 or 14, with radar alt off, they were normal.

 

14fps radar alt on

Screen_190731_203442_fps14.png?raw=1

 

48fps radar alt off

Screen_190731_203444_fps48.png?raw=1

 

38fps radar alt off

Screen_190731_203525_fps38.png?raw=1

 

12fps radar alt on

Screen_190731_203531_fps12.png?raw=1

 

I hope this helps to find something.

 

Regards

Jens

Mirage_framedrop_radar_alt.trk

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The only way I found to avoid this bug is to turn ON the altimeter only in critical phases. I think this bug is related to an extended use of the altimeter.

There are only two types of aircraft, fighters and targets. - Major Doyle "Wahoo" Nicholson, USMC

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Bug confirmed. It happens to me 10 minutes ago. I didn't understood why my fps was so shitty flying on deck. Then I remembered this thread and I turned off the radar altimeter and the flight was smooth again.

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  • 1 month later...

It's strange but I had this bug for the first time today. I was flying an approach to Kutaisi at about 5000 ft MSL with the radar altimeter on and the radar in EM, suddenly my frame rate dropped heavily.

 

I remembered seeing something about this and put my radar into SIL which did nothing but as soon as put it into standby my frame rate was good again and the game was smooth. I did not test the radar altimeter.

 

The strange thing is I am sure that I flew pretty much the same approach 2 days ago with the same configuration and did not have this problem.

 

So now I am unsure whether it is the radar or radar altimeter but will test. However obviously putting the radar into standby worked for me with the radar altimeter still on.

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