The game used to run fine in VR mode for me but it's freezing after just 10 minutes now. I don't know if an update broke it or if it's a problem on my end. Does anyone know what is going on?

I have a Ryzen 5 3600 and GTX 1660 TI.

I try Loading up Vrchat and it Kills my Steam and Virtual Desktop and it didn't do this Until the New Update came out and i tried it on my Quest by itself and it was fine but on PcVr it would just stop loading it up kill my Steam and stuff

The update might have trashed it performance-wise. I use oculus link (cable) w/steamvr and haven't noticed any real issues with the new update though.

1660ti alone isn't really great for pc's that's pretty lowend for VR, change your vr settings to low in vrchat and see if that helps

not really IMO i would consider 4gb gpus to be very low end

VR is really only meant for 8GB+ gpus for gaming, not 4GB