Is there anyway to reduce the amount of graphics lag this causes in OS X? The latest version works perfectly on my iMac w/ a Radeon 4850 (getting 50mhash), but it makes everything so laggy i can only run it when afk.
Currently the only flag I'm using is -w 64 as that's recommended in the OP.
Add -f 60 or a higher number (-f should always be a divisor or multiple of 60)
If that's anywhere close to -f settings in GUIminer, -f 60 lets me watch GPU-accelerated HD videos without a problem. Even -f 55 is ok.
Same goes for you, 55 isn't a divisor or multiple of 60. -f 60, 120, etc are nicer.