So the answer from Apple after testing 32-bit and 64-bit on 13 and 15-inch MacBook Retina was that it is a software issue. i.e. Renoise.
Can anyone in here relate to this problem or confirm that it is NOT a Renoise?
Yes it is not Renoise.
If it worked perfectly on your external screen and that screen started also displaying the same problem as the Retina display after a Mac-technician "fix", it is *not* Renoise and the Mac guys are simply trying to pimp you off with a cheap and easy conclusion.










