Frustrating random crackling in Ableton, doesn't seem to be latency related
I've been having a pretty irritating issue with Ableton where I get this wave of bizarre crackling/static sounds every 5 - 8 minutes or so. It happens when playing through my interface, so mic or guitar/bass signals and it does seem to be exclusive to Ableton, I opened Logic and played for a while through that without issue. I have tried literally EVERYTHING I can think of, including sending my interface (Focusrite 2i4) in for repair - which apparently was not the issue.
I have uploaded a few clips so you can get an idea of what this sounds like:
Things I've already tried which it has persisted through:
-adjusting buffer/latency sizes, 64, 128, 256, 512 etc
-running class compliant mode
-plugging into a powered USB hub
-plugging directly into the macbook
-testing with & without phantom power
-unplugging power, and every other peripheral BUT the sound interface -switching cables
-buying a voltage regulator, in addition to the already decent surge protector -disabling all wifi, bluetooth connections from my mac
I have a more than capable setup, its as follows:
-Retina Macbook 15" Mavericks 2.7 Ghz i7 quad, 16GB Ram
-250gb SSD with plenty of free space
-Focusrite Scarlett 2i4
The only thing which HAS worked was setting up an old M-audio USB interface, I can play & record through that and have never had any static issue, but it is not nearly the quality of the 2i4, doesn't have phantom power and again I sent my 2i4 in for repair where they agreed to swap out the board for me even though they could not replucate the problem. I CAN play/record fine in Logic Pro with the 2i4, so it is not my interface.
Any help would be so appreciated.
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