Since updating to 2.5.6.59625, when I start the gfx part of teh game, 3D viewers in mission editor, or try to start a mission the game would crash and cause my PC to lock, deleting my shaders folders in effort to fix only meant it crashes during startup. I can fix the issue by rolling back to last patch 2.5.6.59398 and start/play the game again, DCS.log ends as below, cut off as PC hard crashes.
dcs.log.old