The game will freeze and crash

Played Strike for roughly the first time since release, and that worked quite well (even Tatooine worked without a crash, shock horror!) until I reached Jakku, then it all went to pot again. It is like the game freaks out when I play a map I've not played before, has a fit and CTDs.

Will have to try all the graphics at low settings and see what results I get. Shouldn't have to do this as my rig played the Beta fine with everything set to high, but anything for a quiet crash free life, eh?