When running VRChat on Proton(Linux), AVPro is disabled from VRChat 2020.3.1 to ensure stable operation
This is because the WMF(Windows Media Foundation) emulation was not properly implemented in Proton at the time,
but Wine 6.0 supports WMF and Proton 6.3 merges this update.
As mentioned above, AVPro may work on the current Proton.
But we can't test it and we're not sure if it works.
So, please add an option to enable AV Pro on Proton.
This allows us to test AVPro on Proton and has no effect on the current behavior.
There are several ways to implement the options, but a command line option would be great because it is easy to test.