I feel your pain. When I OC I get crashing too. I never fully vetted my OC so I'm just blaming the instability on that and not on MWLL. When I run at factory settings I don't seem to crash as much if ever to my recollection. My advice is to spend a lot more time finding OC settings that are stable. Continue to tweak them as described by any number of guides available online or to your own experience. Fortunately, crashing and returning to the same server puts you back in at the same rank as when you crashed so all is not lost. I really like that feature btw.