Hi all, and thanks for answers. Problem with Firestorm is still mistery for me, tried with drivers ( everything got worse, crashed even before i could take pic so rolled back to previous), smaller photo sizes and problem remains.. Downloaded newest Black dragon viewer ( wich now does support bento, yayyy), and all is fine, problem solved. But really interesting thing is that even on highest settings on Black dragon i have much less lag then on FS, and BD is concidered as very heavy client... Again, thank you all for help :))