So I have an issue interfacing my Focusrite Scarlett 18i8 with Pro Tools (version 11.3.1). Everything technically 'works' until I hook up a guitar into a audio track and boost the gain, it seems to be once the gain is raised high enough there is an electrical-sounding loop noise which appears.
All inputs on the interface produce the same result and, on hitting record, Pro Tools crashes. I have ASIO4ALL installed as a separate playback option and that records fine, so it appears there's some issue in communication between Pro Tools and the Scarlett.
I contacted Focusrite earlier, as I thought it was an interface issue, however after running through a bunch of troubleshooting issues (which I'll list further down) it appears that PT is the problem. I had an error message appear when I was using it with Reason - "the audio driver stopped working" - however that disappeared after connecting via a different USB port.
Troubleshooting Steps Taken:
Checked all interface inputs to discover issue ever present
Listened through both monitors and headphones to find issue ever present
Updated Driver Software
Checked connections between interface and monitors to be balanced XLR-1/4 inch jack.
Disabled Focusrite Driver in Playback/Recording Devices
Connected Interface via a different USB port
I can't contact Avid as my ASC has apparently expired, so I'm turning to your collective wisdom for help
