I’ve used my X32 and Utrack 32 for the past year without issue and I just did a reset and updated the X32 to most recent firmware and at 48khz I got my first ever crackling recording. Really bad and totally unusable.
I am going to check all firmwares late this week to confirm the uTrack is using the most recent but this is a new problem for me. with all the exact same gear.
Only difference is that I have added gate, eq, compression and effects to each channel in my in-ears mix.