1590611982_nth-IR-crash.zip
S22 (the latest, really), Corona daily from May 6, Win 10
After an afternoon of sweating and swearing here is something that (for me) crashes reliably.
As soon as I drag a connection to the Bump port (as shown in the image), thus creating a Shared Shader, C4D crashes - and I don't even have to have the IR active.
So IR might not even be to blame all the time (or at all, no idea).