There seems to be a render bug occuring on some mac systems with OSX 10.7.x and non CUDA cards : extreme highlights and dark areas randomly "flashes" either to black or to a flat color. It happens on the GUI, on the video output and on the rendered files, but seemingly never twice on the same frames (if you pause, rewind / move the playhead then play again the flashing will occur on different frames). The scopes also reflect the bugged picture.
The bug looks like this :
I saw some other peoples experiencing the same bug on creative cow forums. The only fix that worked for some of them seems to be rendering at a slower speed. Some got rid of the bug with 50% speed, while in my case even 1% speed still output bugged files (even if the number of bugged frames is far lower).
My system is :
Mid 2011 27" iMac
OSX 10.7.4
3.4 GHz Core i7
16 GB of ram
AMD Radeon HD 6970M w/ 2048 MB ram
Pegasus R6
Resolve 9 lite Beta 3
CUDA 5.0.17
Is this a known beta bug that will be ironed out of the final release ?