Have seen plenty of other users on here that have experienced similar issues to mine, but haven't seen any real solutions so thought I'd raise it again in the hope of hearing from someone who has maybe managed to sort the issue out.
When using the Rack as an interface and playing back YouTube videos in Safari on my Mac I get really annoying pops and clicks.
I'm using the latest Helix driver for Mac (primarily so I could use keyboard volume controls as well as the wider range of sample rate options) and am making sure the sample rate on the Helix matches that chosen on the Mac.
After much mucking about, changing cables and what not, I've established that it isn't a ground loop issue, but seems to be one related to sample rates. When I change the sample rate in audio/midi setup the issue goes away.
It's usually momentary and it's at random moments so hard to reproduce, but it's pretty regular. The issue only really seems to crop up on Safari, Chrome seems to be OK, but I've noticed that it happens with that as well when a higher sample rate is selected like 96hz.
I don't have this issue when using the Mac with my other audio interfaces and the issue doesn't seem to occur when using Logic, Spotify or Apple Music.
If anyone has any suggestions as to how to alleviate the problem I'd love to hear from them.