Нагуглил проблему. Это хреновая плата версии 4.2.2 в которой перегреваются драйвера. Решение - замена на версию 4.2.7: "A few of us over at creality3dofficial.com have found a proper solution to this problem. The motherboard is faulty and requires replacement. The stepper drivers are heat soaking causing them to send bad signals to the stepper motors, causing the clunk and layer shift. The solution is installing the new v4.2.7 board. Several of have done it now (including me) and it has a 100% success rate. Upgrading the cooling is a bandaid solution that only fixes the symptom, not the problem." https://www.reddit.com/r/ender3v2/comments/kn8u72/layer_shift_investigation_data_and_video/
A few of us over at creality3dofficial.com have found a proper solution to this problem. The motherboard is faulty and requires replacement. бвахаха. ктобы сомневался)))