Hiya sober,
Well with cat 10.2 and shmall's ccc settings i managed to sink the ships, get sent to kiel, was about to id a taskforce on route to kiel then pow, sound loop n dark screen again

hard reset needed grrrrrrrrrrrr
Did not try the high priority though, will try that now
Ohh i notice the sea if stuttery now though

but did like playing for more than a few minutes lmao
The priority might do something, in Trainz it seemed to help me last year, but then new drivers etc etc so who knows, at this stage as i say i would moon out a window to get a stable game lol
If all else fails i'm gonna stay up a while longer and try the 10.3 variants
All these settings are non xfired though (dang waste of a good 4890)
Anyways
Cheers
Def
Will report back asap (hopefully over 30mins again

)
PS: Sorry sober i forgot to answer a Q, yeah i got all green ticks after i installed the game (2x4890's i'd hope so too !! ) he he
PPS, never had to in any game thus far, but i could try xp compat-mode, as i say never had to resort to that except i think the initial arma2 release (hmm minds foggy)