Thanks for the reply Dale, yes, I'm running AH as admin, and have removed NVIDIA geforce experience (that checks for driver updates)
I've also been wondering if we're all on Win11 (those with freezes), MS may have done something during the may patch window, although I've read the KB's and I can't see anything obvious.
My other hope was to buy a AMD Radeon card and try it on the same machine I currently game on, but I'm not working atm, and the price for a similar card to my 2080 is several hundred bucks

PS : I get the same freeze on DX9, with same details
Time of day 12:58:15.9431924 PM
Process name aceshigh9.exe
PID 4124
Operation NotifyChangeDirectory
Path C:\Windows\System32\drivers\etc
Details CANCELLED Filter: FILE_NOTIFY_CHANGE_FILE_NAME, FILE_NOTIFY_CHANGE_DIR_NAME, FILE_NOTIFY_CHANGE_ATTRIBUTES, FILE_NOTIFY_CHANGE_SIZE, FILE_NOTIFY_CHANGE_LAST_WRITE, FILE_NOTIFY_CHANGE_SECURITY
Duration 1292.7041384 (21 mins, as in my DX9 test I wasn't expecting freezes, so hadn't started process monitor until I saw the first freeze, was a 30 min test)