Lower FPS, Microstutters and Screen Tearing

luiskeniosis

I didn't want to post until I tried absolutely every solution I could find first, but after spending half a day researching testing, I think I've tried everything.

I remember a year or so ago, I used to be able to run T5 at 165fps (my monitor's hz) no problem, maxed out settings, everything. Didn't touch Plutonium for a while, but now I only get around 60-100 (140-160 if I am looking up at the sky or the ground), plus it just feels more stuttery.

What I've tried:

DDU uninstall + reinstall GPU drivers
"Cycling" the fullscreen settings from fullscreen -> windowed -> fullscreen. No change with either setting
"Sync every frame". No change if on or off (game restart after change to "apply" change)
In AMD settings, turning on/off Enhanced Sync. No change.
In AMD settings, turning on/off FreeSync. No change.
Everything else is off in AMD settings.
Following an old Steam forum post - overriding AMD tessellation settings and setting it to 16x
Deleting %localappdata%/plutonium and letting it get redownloaded.
Deleting T5 and redownloading the entire game
Deleting plutonium.exe and redownloading
Turning all settings down to the absolute lowest (10ish fps gains)
Setting GPU to "High Performance" in windows graphics settings for plutonium bootstrap
Checking "disable fullscreen optimizations" for boostrap
Basically everything in https://plutonium.pw/docs/low-fps/
com_maxfps is set to 161, but also tried 0, 200, 30 then back to 161. No improvement.
r_multiGpu and r_multiThreaded? (I don't remember the exact command). No improvements set to 0 or 1.

I really think there must have been a Windows, GPU driver, or Plutonium update that fucked my performance, as I vividly remember being able to run T5 well a year or so ago.

In addition to the lower FPS, the worst part is I actually occasionally get screen tearing. The worst of both worlds.

My GPU usage hovers around 50-60%, CPU usage at <40%.
If there's anything else I could try please let me know lmao. THANK YOU.

Specs:
Ryzen 5 3600
AMD RX 6600
RAM 16GB 3200mhz
NVME M.2 SSD