I don’t see how one game that isn’t anywhere near taxing as others I play for the same period of time makes my Overclock unstable, as I said my system has never crashed when playing hours of doom, CoD, BF or star wars battlefront2. The crash with WoWS is always within the first few games and then is fine afterwards.
no two games tax the CPU in the same way, like i said my CPU was prime stable then a web browser crashed it.
the best test for a system is to use it. if it docent work its not stable and what you call stable may be very unstable for a different persons work load.
the only truly stable system is a stock one.
now onto fixing your problem.
Ram or GPU overclocked, a system crash docent have to be CPU related.
i am going to assume you have reinstalled the game and its upto date?
have you looked in the event viewer for problem around the time your crash happened.