I've got 2 AOC monitors (2369M + 2490W1), On my mid 2015 macbook pro I had no issues (apart from window server using all my resources when they were plugged in)

I've got 2 AOC monitors (2369M + 2490W1), On my mid 2015 macbook pro I had no issues (apart from window server using all my resources when they were plugged in). I'm the new M1 Macbook pro(work laptop) I'm finding quite often I am getting small vertical bands on both monitors randomly, these are more noticeably when using dark themes. I've changed cables and colour profiles and not really fixed it. I've not had this with my old laptop or even my desktop pc. I would swap them out for 4k displays but it's just too expensive for me. I have been using my glasses more to use my monitors thinking my eyesight is getting worse but it could just be the monitors...