Dangerzone Posted December 9, 2020 Posted December 9, 2020 Hi, Not wanting to derail another thread - but I found this post very interesting so wanted to ask in a dedicated thread: 17 hours ago, Bullant said: Not wanting to dis your findings, but here it is straight from HP themselves ... the 100% setting is where it is at I've actually found that running at 150% and an in game PD of 0.8 makes for an even better experience both in performance and image quality. I'm aware that the end result is the same (whichever is used)... but is the processing used by each actually different? Does DCS's PD use the CPU rather than the GPU, and steam use the GPU more? If so - is there any benefit in tweaking with these? ie - if someone is CPU bound, are they better off dropping PD and raising SS to get the same output, but reduce the stress on the CPU and get the GPU to do more work, or vise versa?
Taz1004 Posted December 9, 2020 Posted December 9, 2020 (edited) Just do your own testing. Set SteamVR SS so the final resolution reported by the Per Application Video Settings is exactly your headset's native resolution. Disregard the % value. You can get the resolution exactly to your native resolution if you combine both Global and Per Application sliders. Then run the game with 1.5 PD. If your HMD's vertical resolution is 2160, then you will be running at 3240 vertical resolution. Note your frame time. Set in-game PD back to 1. Then in SteamVR, again combining both Global and Per-Application sliders, set your vertical resolution to 3240 (Assuming your HMD is Reverb, otherwise base it on your own HMD's resolution). Again, disregard % values. Run the game and note your frame time. For me, frame time is identical. Quality is also identical. I prefer SteamVR adjustment because you can make finer adjustment. Edited December 9, 2020 by Taz1004 1 Better Smoke - Better Trees Caucasus - Better Trees Syria - Better Trees Mariana - Clear Canopy Glass
Dangerzone Posted December 9, 2020 Author Posted December 9, 2020 19 hours ago, Taz1004 said: Just do your own testing. Set SteamVR SS so the final resolution reported by the Per Application Video Settings is exactly your headset's native resolution. Disregard the % value. You can get the resolution exactly to your native resolution if you combine both Global and Per Application sliders. Then run the game with 1.5 PD. If your HMD's vertical resolution is 2160, then you will be running at 3240 vertical resolution. Note your frame time. Set in-game PD back to 1. Then in SteamVR, again combining both Global and Per-Application sliders, set your vertical resolution to 3240 (Assuming your HMD is Reverb, otherwise base it on your own HMD's resolution). Again, disregard % values. Run the game and note your frame time. For me, frame time is identical. Quality is also identical. I prefer SteamVR adjustment because you can make finer adjustment. Thanks for the suggestion. I'm unable to get the headset's resolution exactly to match because SteamVR seems to have the wrong 'ratio' in it. It's something like like 2148x2160, or 2160x2172 or something similar (can't remember the exact numbers). Sounds like there's no difference from what you've described - so like you I'll probably stick with SteamVR being the 'master' for SS and leave PD as 1.0 - just when I read what I did on the other thread it had me thinking that maybe this was a way to 'balance out' CPU and GPU, but it seems not.
Taz1004 Posted December 9, 2020 Posted December 9, 2020 (edited) 8 minutes ago, Dangerzone said: Thanks for the suggestion. I'm unable to get the headset's resolution exactly to match because SteamVR seems to have the wrong 'ratio' in it. It's something like like 2148x2160, or 2160x2172 or something similar (can't remember the exact numbers). Sounds like there's no difference from what you've described - so like you I'll probably stick with SteamVR being the 'master' for SS and leave PD as 1.0 - just when I read what I did on the other thread it had me thinking that maybe this was a way to 'balance out' CPU and GPU, but it seems not. It's not wrong ratio but 100% SteamVR is already 140%. And can't reverse it back to native resolution without going into decimal. But like I've said, if you can't get it exactly from Per Application slider, move the Global slider one or two tick forward or backward. Then try again from Per Application. Some people think there is difference because they base it off of confusing SteamVR % values or doesn't realize SteamVR and in-game PD are on different multiplier. 140% SteamVR SS is not same as in-game PD 1.4. Edited December 9, 2020 by Taz1004 Better Smoke - Better Trees Caucasus - Better Trees Syria - Better Trees Mariana - Clear Canopy Glass
Dangerzone Posted December 10, 2020 Author Posted December 10, 2020 (edited) 10 hours ago, Taz1004 said: It's not wrong ratio but 100% SteamVR is already 140%. Thanks, and sorry to mislead you - When I mentioned wrong ratio - I'm talking about high x width only, nothing to do with the %age. The Reverb is a 1:1 ratio display (2160x2160) per eye. However steam has a ratio of 1:0.998 or similar- it thinks that the display is slightly wider than tall, or vise versa. If I set the width to 2160 the height is off and vise versa. As such - it doesn't seem like I can get an exact ratio for my display. Edited December 10, 2020 by Dangerzone
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