Audio sync issues when using 4 corner adjustment

I’ve experienced audio sync issues when using 4 corner adjustment. I’m using Picopix Max with JBL Charge 3 bluetooth speaker and it works perfectly when I don’t have the 4 corner correction on, but when I do, I start getting small framerate issues on video playback and the audio goes off sync.

One thing to note is, that this only happens when I play video from my MicroSD-card. Netflix and YouTube both work well even with 4 corner adjustment on.

The MicroSD in question is a Kingston Canvas GO! Plus (Class 10, UHS-I, U3, V90, A2) and I’m playing 1080p video from it. It works perfectly without the 4 corner correction.

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same here - I will test the sync by turning off 4 corner adjustment