Astaroth this issue is gone for me - that means one of your updated fixed it (Im on dev) or the Shadow settings you mentioned did the trick. Will eventually try different shadow settings but hey it works! Thanks :)

definitely can try it, will keep you posted after some game play with the mentioned settings.

Thanks for the update!

I had experienced crash only once however the steps to reproduce are pretty exact - stuttering and fps drops in multiplayer games most of the time and game restart actually helps.. (3570k, ATI 7950, 8GB RAM)

Sure thing, Ive upped the whole folder in .zip at dropbox.com, hope that helps:

https://www.dropbox.com/s/qpmxc1ea1ruaxhb/Arma%203%20Alpha.zip