Excellent guide. Followed it today on my i9-10850k, 64Gb, 2080Ti machine and VR in the G2 is much better. Individual values are going to be personal choice I guess, but getting OpenXR 70% scaling but with reprojection turned off anbd MSFS scaling at 90% feels about right, e.g. when turning hard while looking out the side window no longer makes me so giddy feeling.
Rolling back to the 452.06 driver gave the biggest gains for sure.
Excellent 