First, you go here:
C:\Program Files (x86)\Steam\steamapps\common\SteamVR\resources\settings\default.vrsettings
(Or wherever you’ve installed steamvr). Then find this in that file using notepad:
Change the value from 4096 to 8192.
Then set PiTool to 1.0 at all times (when playing steamvr games). Now, all you need to do is enter the game, then when it’s loaded, you can open openvr advanced settings and change steamvr SS to whatever you like ON THE FLY. YES. You don’t need to restart the game to see the effects of changing steamvr SS. I went to the lab, and kept changing the SS from inside the game and it was changing as soon as I was moving the slider. And it would get SO sharp at >2.0 SS since there’s no limit to the resolution because of the 4096–>8192 change that you did at first.
However, parallel compatibility needs to be off or else you need to restart the game everytime you change the steamvr SS.
And for oculus games from pitool, I noticed that changing pitool SS WHILE in game did indeed change the resolution instantly too. So restart not needed with oculus games either (except for the annoying case of needing parallel compatibility)
And oh boy is it SHARP. I went into the “vortex” section in the lab, and even though I wasn’t expecting that much, I was BLOWN AWAY by how incredible it looked. Was legit smiling the whole way through of that level (I put steamvr SS to 2.2 lol, while keeping pitool at 1 as I said above). Oh and also, better to put at 72 hz imo. Looks just like 90 but with better performance. Let me know if you try this and tell us how it goes
EDIT: the reason why i said change pitool from 2 to 1, is this: when you have pitool at 2, you can have the steamvr SS to be at 0.1 only. Anything above 0.1 will have terrible fps, because it jumps from having 3k resolution, to 4k, then 5k, then 6k for 0.2, 0.3, 0.4 steamvr SS values, etc… However, if you put pitool at 1 or 1.25, you can have much much better control over the overall resolution. Then, when changing steamvr SS values, instead of going from 3k to 4k to 5k after every 0.1 increase, it changes from 3k to 3.1k to 3.2k after every 0.1 steamvr SS increase. (Not the exact values but you get my point, you can have more precise control over total resolution this way)