Just tested the new release. For some reason, this release works very well with my OpenVR FSR mod !
( You can get the mod at https://github.com/fholger/openvr_fsr if you are interested. )
I set the FSR's render scale to 0.50, which actually means 2x. In the past the FSR mod didn't change much for frame rates.
Today after the new update, I tested it with a 5k video (2700p). When FSR is disable, the frame rate is 87 to 92. When it's enable, the frame rate goes up to 112 to 120(max). For the first time, DeoVR plays a 5k video so smoothly that I cannot believe my eyes!
So congrates on the new release, for whatever the reason !! this one 12.1 rocks !