Hello,

Last week I used Serato 4.0.1 (4011508)arm64 on MBP M2 PRO Sequoia 15.6.1 together with a Pioneer FLX-10 controller for two long gigs (8–11 hours each), and after approximately 5–6 hours of use a mysterious issue appeared — the channel LED gain indication would intermittently disappear.
The audio was still working correctly, both through CUE and the master output, but the channel level indication was completely dark. This happened multiple times, and on one occasion I managed to restore it by using the Instant Double function, loading the playing track from one deck into the other channel.
The issue was observed with two different FLX-10 controllers and also with different USB-C cables, and it was not present in the previous 3.x.x versions.