The team have done some quick comparison test with 50+ games during the holiday on RTX2080Ti,
Here are some draft conclusions:
1. We have achieved ~35% performance improvement by implementing a new rendering algorithm, but it's not backward compatible. it requires Unreal 4.18 or above version, and Oculus SDK 1.17 or above. But almost every Unity games are OK.
a. New game based Unreal 4.18 or above works perfectly.
b. Old game based Unreal 4.17 or below don't work, and you will get a wrong stereoscopic overlap.
c. Games based Unity engine work perfectly.
d. Games based Oculus SDK 1.17 or above work perfectly.
To do backward compatibility with the old game based Unreal 4.17 or below, we add a checkbox in the PiTool, but it seems most users turn on the setting but forget to turn off it when playing the new games, thus, they didn't take the advantage of our new rendering algorithm.
a. Pavlov VR, Batman: Arkham VR, IL-2 Sturmovik: Battle of Stalingrad;.....
old Unreal engine Not supported
b. Onward, Payday2, DOOM VFR, Skyrim VR, The Gallery - Episode 2: Heart of the Emberstone, Guns'n'Stories: Preface VR,.....
new Unreal version, supported
c. The Lab, The Blu, Fruit NinJa VR......
Unity based games supported
2. RTX2080Ti VS GTX1080Ti you will get ~30% performance improvement.
So when you combined solution 1 and solution 2. you can totally get more ~60% performance, taking GTX1080Ti as the benchmark.
for Pimax 5K+, you can set the rendering quality level 1.5 in PiTool and SS ~100% in SteamVR, The games play smoothly and visual quality looks fanatics.
For Pimax 8K, you need set the rendering quality level 1.75 in PiTool and SS ~60% in SteamVR, The games play smoothly and visual quality looks fanatics.
Accordingly, we tuned a special gamma setting for Pimax 8K under 1.75 rendering quality value, it can enhance the sharpness but drop off some brightness.
important for Pimax 8K, you should set the rendering quality 1.75 in PiTool for good visual quality and sharpness. currently, we don't' recommend any setting blow 1.5 in PiToll. We might lock the 1.5 or 1.75 value in next version PiTool for regular 8K users. But geeks and advanced users can still access the further setting.
for Pimax 8K backers, you should go with RTX2080Ti and "rendering level 1.75", plus new gamma setting which is going to be updated in the headset's firmware.
3. 72Hz VS 90Hz in Pimax 5K
We tested 72Hz and 90Hz, with our the CLPL pannel technology, the difference between 72Hz and 90Hz are unnoticeable as we expected since the system MTP valve compensated in other ways.
We plan to make a comparison table about Pimax 5K+ and Pimax 8K and share with you.