latency + mouse issues

[rossian1]

Hello I am posting here to share something that helped me. I have had issues since 2021 when i got this pc, and it just seems to never improve. I read this forum alot without an account and I notice I find slender in alot of posts, and his replies are very helpful. From putting information together after reading various posts, I finally have a setup now I consider playable. I use scewin to hard disable hpet in bios, i enable low io latency in hiddein bios as well, and enable ehci handoff and set legacy usb support auto. for windows which has impact as well, i have 3.58mhz (my default is invariant tsc 10mhz, i think unknown 3.58 feels better, and anything else my dpc latency always at 500 it seems.), 0.5066 timer res, useplatformclock yes, disabledynamictick no and my dpc latency stays under 50us with some spike here and there above 100ish. my mouse went from being unpredictable/sluggish, to now i feel like i have control again, or at least an improvement. after doing all these, i drop 2 30 kill games back to back in cs2 which i havent done in a LONG time. I definitely don't think this is placebo. I have been trying to fix this for years, from trying many bios versions, testing a bunch of bios stuff, trying all my usb port, doing hundreds windows tweak, and nothing gave me results like this. My specs are i5 10600k and 3070 ti. My only "issue" now is that it will sometimes spike above 100us but its not that often. im also open ears to any advice to further improve my setup

--- EDIT ---

I believe what I said above simply gave me a new feeling but didn't solve the underlying issue, and also I went to windows 11 and tried the same setup which resulted in decent performance loss. I decided to go back to defaults but change 1 by 1 and I have found a combination, going good for 3 days now and I think it's the best improvement for me. I have 2 different monitors 1 is 280hz and the other is 165hz, I read that this can cause issues, I decided to enable my intel graphics for once and put my 2nd monitor on that, I genuinely noticed a difference on my desktop, normally I could move my mouse fast in circles and visually see the inconsistency in the mouse trail, but now its evenly spaced and consistent. Next I disabled hpet in bios but did not do anything in windows, I really didn't notice any effect. Then I read that this "USB power delivery in Soft Off state (S5)" can possibly misbehave and effect devices even if they aren't in a sleep state, so I turned that off. Instantly I checked dpc latency and the spiking went away when moving my mouse, where as before on windows 11 it would spike to 1000 (windows 10 was great very stable under 100us) now it's almost stable 500 on windows 11 which is a first for me. Then I disabled my bluetooth controller using scewin as its not visible normally. xHCI handoff and ehci handoff and usb legacy support are all disabled as well. After all that I applied "bcdedit usefirmwarepcisettings no" and "bcdedit tscsyncpolicy enhanced". I have been using my computer for 3 days and every boot is the same, my mouse feels the same as it did the day before which hasn't happened in basically years. There isn't really a method to my madness, besides my computer driving me clinically insane, I just apply random stuff and hope, sorry for lenghty paragraph and poor explaining. I still feel my mouse falling short sometimes when I aim somewhere but it's the most consistent its been and the responsiveness is great now. Not sure if some stuff I applied is useless, but I listed what I did.