Half life Alyx needs parallel projections?

[dogbite]

I recant my earlier position. now that i am deeper in the game, i do see where PP cleans up some anomalles.

[SweViver]

@TimoLimo

That rendertarget scale seems also ‘tiny’. Still a bit of an issue where my GPU is 60-70% under load when playing. Using GPU Catalyst is impossible to play with as the right eye keeps drifting/stuttering/clipping with any value above 0.

Indeed that renderTargetScale is very low. Did you manually change it? Or do you run PiTool render quality 1.5 or higher maybe? Either way, try setting the “gpuSpeedRenderTargetScale” to 1.0 or even 1.4.

The GPU catalyst value before the occasional-stutter fix, was 2.80. Try it, maybe it works ok for you and you might get the performance back.

[TimoLimo]

Thanks, SweViver. I’ve been looking into it a bit, and gpuSpeedRenderTargetScale keeps getting overwritten, the values are auto-generated in the steamvr.vrsettings file (located @ C:\Users\MYUSERNAME\AppData\Local\openvr )

But it is directly affected by the PiTool render quality as you suggested, so thanks for that:
Pitool Render Quality --> gpuSpeedRenderTargetScale:
0.5 ----> 1.5
0.75 —> 1.06
1 -------> 0.6
1.25 —> 0.38
1.5 ----> 0.26
1.75 --> 0.20
2 ------> 0.14

Regarding your suggestion for GPU Catalyst value 2.80: did you mean 2.75 as it’s only possible to change with .25 steps and 2.75 is closest to that. Either way, using any value other than zero makes my 5K+ right eye glitch so I cant really use it.

I was first running at PiTool 2 and supersampling 0.25 giving a resolution of 3852x3288 per eye, now I’m running PiTool 1 and supersampling 1 also giving a resolution of 3852x3288 (=native resolution of my 202 5K+). But need to take a closer look at average FPS to see what is better (can’t get a stable 90fps in most things, always just below it, especially when using PP for Alyx)