There must be some magic in 4.15m or at least in my 4.15m cause I moved the 4.12.2m game folder in a different directory and patched it manually to 4.15m.
I did what you suggested for my 4.12.2m
1) Downgraded to a Dec 8, 2020 driver package 20.12.1 earlier it was June 23, 2022 (22.6.1) ------didn't solve the issue.
2) Copied conf.ini from 4.15m to 4.12.2 --------didn't solve the issue
3) disabled my FaceTrackNoIR and looked around with mouse -------diidn't solve the issue.
Surely there must be some magic in 4.15m as it advertises better handling of resources...Yes...it twice momentarily stuck for .25/.5 second but never stuck anymore..I played the Finland Brewster-239 single mission and aimlessly flew ...dived, climed , did barrel roll for 15 mins and it never freezed and crashed.....
Also in my BAT mod I flew Single mission for India on Hawker Hunter ...and flew for 15 mins ( in my earlier June 23, 2022 driver) and it didn't do a CTD didn't freeze to...maybe the Hawker Hunter Canopy is too dirty which spared my AMD R7 250 from rendering the ground sharply also there were morning mists...
I am sure you have a good configuration desktop at your disposal so better handling of resources by the game does not matter , maybe not so in a very minimum resource machine like mine.
Lots of "maybe" but can't help it....
P.S.--Also..I have a Nvidia GTX 550 Ti at my disposal , I can test with that if you like....However I don't think Nvidia will do any justice as I had a GTX 750 Ti earlier and it crashed while playing Single mission DOF - American Expeditionary force...however i am willing to try...