Finally worked out how to get 90fps in VR with max detail

[Horendus]

I have been loving il2:BoS VR for the past few week but have been really struggling with only getting 45fps. This causes all animation to blur giving a drunken double image which really gives me a headache after only a few minutes of playing, despite having flawless head tracking (thanks to the "wonders" of Async Reprojections on the Vive!...arg what a trade off)

After playing extensivly with all graphics settings for many hours I settled on high graphics details and a contsant 45fps with Interleaved Async Reprojections, as the low detail setting were just to "lame" looking and eye straining for me to enjoy the game.Without Async Reprojeciton or Interleaved Reprojection on head tracking was terrible so I put up with this and solidered through the eye fatigure and headaches @ 45fps because VR il2 is just to damn good to pass up.

These settings includes everything on maximum and 4xAA with 1.0xSS (4xAA looks much better than increased VR SS)

Just to re interate Steam Vive VR setting were "Allow Async Reprojections OFF" and Allow "Interleaved Reprojection ON" as these at least gave smooth bluring as apposed to stuttering bluring with Asycc Reprojection ON.


Tonight I descided to try one more thing.
Async Reprojection OFF
Interleaved Reprojections OFF
***Enabled Always -On Reprojections*** <----The golden ticket to il2:BoS VR

wow...finally non bluring VR animations! Head tracking is still 99.99% and the 90fp cockpit and dog fighting is stunning. THIS is hiw VR il2:BoS has to be played


FYI system specs are 8600K@4.7Ghz and GTX1080 + 10%oc

[Dark Lord Orobus]

Hum Have you tried 'allow async reprojection' on, and 'enable always on reprojection' together? I found the setting you are using to randomly cause horrible flickers...

[Dark Lord Orobus]

Will give yours a try again though cause maybe the recent update improved things!

[40+]

Thanks for this, I'll try your settings out this evening. I've got a Ryzen 1700x and a 1080ti and have been struggling to get over 50fps in my Vive.

[Horendus]

Yes i tried all combination of settings and have found that Always on reprojections ON and ASYNC Reprojection OFF, and Interleaved Reprojections OFF is the only way to get 90FPS.

I did some reading on it and it seems its its CPU related, taking those off frees up more cpu which game eats for dinner

Another thing, i found setting GRASS to low details helps with keeping 90fps low to the ground, and i cant even tell the difference graphically.



The game is so much better at 90fps. Planes are not just blurs in the sky and the cockpit remains sharp as you move your head

I do get some frame drops in very large battles but if i turn off HUD it climbs back up to 90.

All in all def. worth it to have mostly 90fps flying vs constant 45fps flying.


Another note, my GPU usage is at about 85% with these settings, vs about 45% when stuck at 45fps

[Dark Lord Orobus]

What game settings are you using? I find it hard to beleive you get a constant 90 in the campaign when big air battles with multiple bombers, are kicking off. With max detail as well no chance, and I am running a 1080ti with i7-8770k.

Does 'Always on' not give you sporadic juddering?

[Brutal]

Interesting . . . I am getting a boost in frame rate, however I also get awful stutter if I drop below 90fps. Maybe there's another setting you changed that allowed this to work?

I think he's onto something . . .

[Horendus]

Here is my full settings list giving me 90fps constant in VR.

Found out tonight that disabling shadows makes it rock solid, not really sure where the shadows are even being rendered....maybe the ground? Either way, rather have 90fps as the ground look bad no matter what settings you use. Rather have the performance headroom for the max quality on everything else.

Note, tonight I flew the largest mission yet since managing the 90fps mark which had about 16 planes on screeen at a time with no performance drop.

First up lets talk the evil HUD.
Recommend having HUD Toggle and Show/Hide Instrument Panel mapped closed by so you can fly HUD off most of the time (Floating engine readout) but still display target markers for spotting (Friendly/Enemy planes)

PC Hardware
8600K at 4.7Ghz
GTX 1080 @ 2Ghz Core / 5Ghz RAM
Samsung 850PRO SSD

SteamVR
Allow Async Reprojections: OFF
Allow Interleaved Reprojections: OFF
Enable Advanced Supersampling: OFF
Enabled Always On Reprojections: ON
SuperSampling: 1.0

Screen Res: 1600x900
UI Scale: 100%
Shadow Quality: OFF <--Played with this setting tonight, now no dips bellow 90fps at all
Mirrors: Off <-- I have not seen any mirrors in any of the planes I fly?
Distant Landscape Detail: x4
Horizon Draw Distance: 100KM
Landscape Filter: Sharp
Grass Quality: Normal
Cloud Quality: High
Target FPS: 100
Dynamic Resolution: FULL
Antialiasing: x4 <--This looks better than SS as it cleans up the cockpit ALOT

Full Sceen: NO
Enabled VR HMD: YES
MultiGPU: NO
VSYNC: NO
SSAO: YES
HDR: YES
Sharpen: YES
Use 4k Textures: YES

Nvidia Control Panel
Reset to default then change these
Power Management: Max Perform.
Ambiant Occ: Quality
Multi-Frame Sampled AA (MFAA): ON

[Dark Lord Orobus]

Well just tried your settings. On a 1080Ti 8770k OC'd to 5ghz, there is just no way I can maintain a constant 90 and 'always on RP' therefore creates a horrible flickering/juddering effect.

Would love to know how you're acheiving this miracle but I think I'll believe it when I see it to be honest. I demand a video of your game footage with an FPS counter, and a little box at the bottom of the screen that shows you in VR holding todays paper!

Seriously though I know alot of people on the forums with beast PC's and non of them claim to be able to hold a constant 90 with settings like yours! So what's the secret? How is it possible?

You're saying low to the ground when battles and bombers are everywhere you're holding 90fps constant?

Congratulations then as your getting much better performance on a 1080 than I am on my OC'd 1080Ti!

[Horendus]

Wolf8312

I have made a mistake in terms of how I thought the graphics quality menu works.

I though that the left hand Ultra/High/Medium/Low were a set of presets for the right hand side however I dont believe this is true now.

In order to get 90fps VR I set the left hand option to LOW and then apply all the above settings.

If I used balanced, its border line with some FPS dips and HIGH or ULTRA forget about it.

All that being said, with many hours playing and tweaking, 90fps is a must and LOW combined with all the eye candy cranked up still looks fantastic and is "as good as we can get" with the current engine/hardware limitations we have to work with.


I suggest you give LOW setting a go with all my settings mentioned above another go.

I would be very interested to know I you find those settings at 90fps offer you a better experience than HIGH at only 45fps and ASW. I certainly choose the 90fps option.

[Brutal]

Hey, that works great. I get a pretty constant 90, I have to do a little more experimentation to lock it in at that.

I wonder what those left hand gfx presets do. I always kept it at ultra.

[Keeks]

Thank you Horendus, that worked great!

[0_Phantom]

Screen Res: 1600x900
UI Scale: 100%
Shadow Quality: OFF <--Played with this setting tonight, now no dips bellow 90fps at all
Mirrors: Off <-- I have not seen any mirrors in any of the planes I fly?
Distant Landscape Detail: x4
Horizon Draw Distance: 100KM
Landscape Filter: Sharp
Grass Quality: Normal
Cloud Quality: High
Target FPS: 100
Dynamic Resolution: FULL
Antialiasing: x4 <--This looks better than SS as it cleans up the cockpit ALOT

Full Sceen: NO
Enabled VR HMD: YES
MultiGPU: NO
VSYNC: NO
SSAO: YES
HDR: YES
Sharpen: YES
Use 4k Textures: YES

where do you get these setting ?

[TEXAN_AMERICAN]

I feel like these needs to be renamed to how to get 90fps with LOW detail lol.

[VelxraTV]

Changing the settings on the left side of the graphics screen (low/balanced/high/ultra) does not change the graphics quality. This setting only changes how far away objects are rendered on the ground. Which is mainly trees and buildings. Planes will still render at 9.99km on all settings.


More info here
https://forum.il2sturmovik.com/topic/49629-3000-steps-condensed-into-one-simple-performance-guide/

[Asker]

Does the HUD still kill the FPS?