Audio glitches and drops out when using varispeed

So I have a very complex drum part to record and need to drop the tempo about 10% to get it right.
My problem is that I can only get reliable audio when I use varispeed for playback (and even then, there are noticeable "flakey" artifacts);  If I try recording anything, I get glitching and after about 3 seconds all audio drops-out.
I tried varying i/o buffer, processing threads and process buffer range, also muting/unmuting the 14 tracks I'm trying to record but nothing seems to solve it.
Anyone have any advice?
Thanks,
Chuck

It's not a mac/tv problem, it is a network problem.
Power cycling is simply unplugging the device from power and plugging it back in.  A restart is not sufficient, in most cases, to reset the network connection.

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