Stuttering when maneuvering (PSVR2- Launched from client, VR through SteamVR) SIM mode

Everything is smooth when flying straight (I can look around quickly with no lag or frame loss), spectatator cam is smooth when moving my head and the camera. It’s only when I pull on the stick or any control surface that I’ll get stuttering. The cockpit will stay fine, it’s just the environment. I can deal with the buildings stuttering when taking off and the rubber banding of friendlies up close, that’s always happened, but this new stuttering is making me cut my game to a 30 minute sortie then I have to leave.

Yes, my drivers are updated. I changed from DX11 after the May 6th update because the game would crash after that update, previously it was the go to DX because DX12 wouldn’'t work. What is it that has been put into the May 6th update that has caused this?
All my settings are pretty low, the only time I’m going to be looking at the grass is when I’m crashing into it, so my priority is frames. No AA, SSAA, VSYNC. No custom skins, sound mods or other extras.
I have Verified game files.

It’s similar to the stuttering you get over ground battles.
Smooth in flatscreen at 144hz. VR performance metrics showing between 60 and 119 fps, sometimes will show solid 60 and bounce up and down where previously would barely drop below 115 (My cap is 120 to match the PSVR2, changing to 60 didn’t stop the stuttering). Ping mostly between 0 and 90. Packet loss- mostly 0.

NVidia drivers always updated becuase why wouldn’t I? I tried going back to DX11 because that used to be stable but it just locks up now.

IL2 plays smooth, Elite Dangerous plays smooth, War thunder used to play smooth until May 6th. So is it me? Did I wake up in the middle of the night on May the 5th and jam a screwdriver into the part of my computer that only war thunder uses?

Was it an NVidia update? A steam VR update? Or the War thunder update that happened on the day that it all started???

Quite a few topics open already on dropped frames and stutters.

About to post some findings here as the issue exists outside VR as well.