>>>>PFA – all good there?
SNAP is OFF, so it shouldn't affect OSNAP, but mixing a lot of different running object snaps is not a good idea, I usually have only 3 or 4 OSNAPs set as running all the time - ENDpoint, INTersection, NODe and QUAdrant.

At the same time I also have issues with OSNAP since 2020 version (in 2019 version and earlier it was OK). Quite often it turns out that I see an autosnap marker, click to pick a point on screen, but then realise that AutoCAD takes my mouse pick in a place different then it shows with autosnap marker. This happens especially when I move the mouse quickly.