Get some faster card, that solves pink frames in most cases, its not worth to struggle like this with barely good card .As for the footage , just conver to raw and look them up in photoshop or gimp to see if frames are really corrupted.14bit lossless does not have big advantage over 12 bit, i couldnt find any in shadows and highlights and colours were equally good, and 12bits footage takes up less space so camera should produce less pink frames.