Footage started importing into Premiere 3 frames out of sync
Hello! I've been editing with Premiere for years. I shoot most of my footage on a Sony A7s iii at a constant frame rate of 23.97 fps and record my audio through the Sony XLR-K3M and directly onto the same media card that my video goes to.
I've used Premiere 2020-22, and always imported the footage directly from the files on the media card, and everything has been fine... until a couple months ago. Suddenly, all of my audio was consistently 3 frames behind my video. I haven't changed anything about my workflow, other than upgrading to a dual channel wireless mic (from single channel) and recording 4 channels of audio instead of 2.
This is the test I ran: I rolled on footage of myself talking with both the older mic and the newer mic. I played both clips back in the camera, and they were both in sync. Then I imported both clips into Premiere 2022, and they were both out sync when I viewed them on the source monitor and when I put them into a sequence. Sure enough, when I slid all the audio forward 3 frames, everything was spot on. I went back to look at some of my older projects to see if I had just missed them being out of sync, but no, they were perfectly in sync.
Any ideas why I'm suddenly having this problem?
My specs:
Premiere 2022 v22.6.3 (Build 2)
2018 MBP running OS Catalina v10.15.7
