After several months of pain-free gaming with Crossover, my game has developed a nasty glitch. Namely, it either freezes for anything from a few seconds to a couple of minutes (!), after which it resumes operation, or else the freeze goes on for so long that I deliberately force quit. Note that unlike a normal crash, it does not kick me back to desktop - it simply freezes for an indeterminate length of time. Interestingly, 90% of the time this occurs at roughly the same points in time and location:
1. The piazza full of trash mobs between bosses 1 and 2 in Hiddenhoard;
2. Just after boss 2 in HoA dies;
3. During the trash mob fight between bosses 2 and 3 in HoA;
4. After Hrimil goes down in HoA.
So, almost never during a boss fight.

I have followed the usual routine for resetting the local network, and changed the graphics to 'Low', with no apparent result.
Currently baffled...
Thanks in advance for any help!