Update. I’ve moved the to sensitivity to full low in Aerofly FS4 but still find it way more difficult to precisely control the R-22 vs in Aerofly FS2 so I find myself primarily going back to FS2 now when I want to fly the helo. I’m a real world helicopter pilot so I do understand how touchy they should be. I’m just not understanding why they seem different if the flight model didn’t change between the two versions. I like the AI traffic additions in FS4 though for practicing formation along with the scenery upgrades.
I think the R-22 feels the same with FS2 at mid sensitivity as FS4 at low sensitivity (in PCVR with my OG Vive Pro). Also, even with my rtx3090 I found I needed to reduce most Ultra settings I had with FS2 down a notch with FS4. The only ultra settings I kept was building density. Not sure why your R-22 is so twitchy. Maybe a control stick trim can fix this? Could also be that one of your control stick pots is worn out. Maybe go to your win10 device/printers and select your control stick, and try to recalibrate it. Then see if your controls seem to centre properly. Then try a recalibration with FS4.