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Hi guys, what are your thoughts and experiences with the Preload Radius option in the DCS settings? It seems to be a real resource hog. Turning it down in VR helps with frame rates. I read somewhere it doesn't effect performance as it runs of the SSD drive but it clearly has a HUGE impact for me in VR. Its a driving factor on what FPS im able to get in DCS with good crisp graphics.


Edited by Viciam1
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Anytime you have questions about settings/performance, it's always best to post your specs.

i9 9900k @5.1GHz h100i |Asus ROG Strix Z390 E-Gaming | Samsung NVMe m.2 970 Evo 1TB | LPX 64GB DDR4 3200MHz

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Posted (edited)
17 hours ago, Viciam1 said:

Hi guys, what are your thoughts and experiences with the Preload Radius option in the DCS settings? It seems to be a real resource hog. Turning it down in VR helps with frame rates. I read somewhere it doesn't effect performance as it runs of the SSD drive but it clearly has a HUGE impact for me in VR. Its a driving factor on what FPS im able to get in DCS with good crisp graphics.

 

 

There's a really good video here DCS World 2.7 Settings Optimization Guide - YouTube by Reflected. He talks about the Pre-Load Radius setting at 15:15 into the video, as well as covering all the other settings in detail. 

 

Hope this helps.


Edited by bart

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i7-7820X, ASUS ROG Strix X229, 32GB Corsair Vengeance DDR4 3600MHz, 11GB Nvidia Geforce 1080Ti, 1x 500GB Samsung 850 EVO, 1x 1TB Samsung 850 EVO, 1x 500GB Samsung 960 EVO M.2, Windows 10. VPC WarBRD Base with HOTAS Warthog Stick and Throttle, Saitek combat rudder pedals, Oculus Rift S.

 

 

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Well I had it at 80,000 in 2.5 DCS and it was working fine in VR...smooth game play in multiplayer...in 2.7 I've had to reduce it to 30,000 and only then does it run smooth...at the previous 80,000 in 2.7 was giving me crazy stuttering in VR. I will try and increase it to 40,000 and see if its playable and keep increasing it until I find a sweet spot.

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Don't know about VR, I use track IR.

I have my preload radius at max with 16GB of RAM and once it loads up the game is working fine, it loads pretty fast cause of the fast m.2 SSD and fast RAM sticks.

 

19 hours ago, bart said:

 

There's a really good video here DCS World 2.7 Settings Optimization Guide - YouTube by Reflected. He talks about the Pre-Load Radius setting at 15:15 into the video, as well as covering all the other settings in detail. 

 

Hope this helps.

 

 

This guy on the video talking about 32GB RAM...

RAM size doesn't matter, well it does but not that much, you can't have 4GB and expect a good game, 16GB would be optimal, what matters is speed cause the faster your RAM loads the less will the impact on your gameplay be, and your processor has to follow as well, it cant be dragging behind, cause then it will get overwhelmed and the fps will go down.

 

You can put 32GB of RAM, well go for 64GB but it wont help if its slow, or if your CPU is slow etc...

 

So for users with slow RAM, Processor or SDD/HDD I suggest you max out the preload radius, cause it will load everything at star of the mission, so it wont have to load later and slow down your game.

 

Screenshot (12).pngScreen_210504_114359.png

Now this is with few people on the MP server, with 30 people my RAM usage goes up to 5GB, and I don't have state of the art components they are just well set up, nothing is dragging behind.

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I tried 100% as I've plenty of RAM, and it just resulted in stutters.  I'm currently running stutter free at around 45%. 

Like many of the settings, seems to be a "try it and see".

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Server: i5 2500@3.9Ghz, 1080, 24GB DDR3, SSD.

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Posted (edited)

Preload radius primarily affects your load times getting into the sim 3D and the mission editor. If you're running a fast SSD (<~65% full), a decent CPU, and have plenty of RAM you should have minimal stutters to none when the game needs to load more terrain data. I've had preload radius maxed out since DCS came into existence. I recently lowered it to 75,000 with no decrease in game performance or stutters but a significant decrease in load times, especially in MP, and fewer spawn failures loading into MP. A near full SSD can make your performance worse than a similar HDD.


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Okay guys scratch all of the above. pre load doesn't help with the stuttering and fps. I thought I had it solved as VR was running fine in DCS for a bit but it went back to being a mess.

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