Wow.. the latest LosslessScaling 2.11 really shines with FSR upscaling.
Just in case someone could use some info on how to use it:
Create a link to the .exe (it can also be opened in a sandbox), than go to properties and edit the link adding:
".....\TrueFacials_Pro_0.5\TrueFacials.exe" -screen-fullscreen 0 -screen-height 720 -screen-width 1280
It will force to open the program in that resolution (change the values as you see fit).
Than start LosslessScaling, setup fullscreen and the options you prefer [for 3d apps FSR seems the best] with LFSG 2.3 at 3 or 4x.
Click "Scale" than during the countdown click on the game window and wait.
It'll go fullscreen with at least 3x fps and just some artifacts here and there..
Hope it helps