Multiple Crashes After 10.5 Pro upgrade

Cubase 10.0.50 pro and win10 latest version here.

Fabfilter Pro-Q3 crashes/freezes the project each time I try to insert it normally on a mixer channel.
I’ve reported to Fabfilter but please note that pro-Q3 does not crash on Cubase 9.5 and does not crash in Reaper 5.9