I have these problems with my World of Warcraft clients:
If my computer has been on and running for more than 20 minutes I can’t even boot the any of the versions of the game. It just is stuck on a black screen with the WoW cursor showing.
WoW Classic nearly always crashes when I go between zones. Fx. going from Tirisfal Glades to Silverpine Forest.
It also crashes during loading sceens, like taking a zeppelin, or using the hearthstone.
None of these crashes above happens if I recently logged in. It only happens once some time has gone by. Like 15-20 minutes.
It also, sometimes, randomly crashes during normal gameplay. Such as fighting, questing etc.
It is not an addon issue. I have tried playing with no addons at all, and it still has these issues. Both clients, that is.
I tried repairing and reinstalling. Updating drivers. Nothing works.
I’ve got almost the same issue (save for the black screen) and it’s literally made me play very little because it’s exhausting as not even the Task Manager is able to close WoW properly.-
There have been some issues about one and a half years ago where it seemed to have something to do with the ISP.
It seems that those issues have never been resolved officially and that kind of bugs me. Especially in HC.