Unreal Engine 4.26 Preview

Has anyone found the Movie Render Queue to work as it used to? I have used it so much on 4.25 with great results - but now it crashes out before rendering one frame on large scenes (that previously on 4.25 could render still frames) without even giving an error message. If I choose render remote instead of render local, I can see it now compiles thousands and thousands of shaders in the dialogue box before it can even render one frame (so takes 3 mins or longer for one 4K image). And exposure has been removed from the Camera setting, so I can’t set a manual exposure from there any more. I thought Movie Render Queue was meant to be improved? Has anyone else had these issues?