External monitor Lenovo Q27-20H display issues

I recently purchased a 27" Lenovo Q27-20H monitor for my MacBook Air M2 laptop (brand new) and I've been having problems from time to time with vertical stripes forming on the monitor (such annealed, interrupted stripes with a diameter of say 0.4cm) and subsequent minor flickering of the monitor (not across the board). It happens relatively randomly, or until now I haven't been able to detect any specific cause. Sometimes I'm on my laptom for x hours and nothing, and sometimes the streaks appear out of nowhere after a short period of time and disappear after some intervention or some time. It happened to me a few times when the saver was on, often when I have some video/clip on yt running, however it is really hard to identify, but mostly it happens when playing some video, or at this moment the problem most often arises (so maybe fresh rate/colour problems, idk...). When the stripes appear to a significant extent, i.e. more visible and the screen breaks like this, often even after minimizing a window, its "rest" remains on the desktop, i.e. maybe 5-10% transparent balance/imprint of a certain part of the browser or explorer. I have 2 USB-C ports on my Mac, originally I ran the original HDMI cable to the USB hub and the USB-C to the Mac. After that, I tried and am still trying a DP cable from a colleague (DP monitor set to DP 1.4) directly connected to the USB-C Mac and the problem still happens. I also tried going through the monitor settings, trying to turn off/on various elements (HDR, Dynamic brightness, etc.), I also downloaded some official application for managing the monitor device, and of course I went through the monitor settings itself in the system configuration and still no change. Overall, the monitor is functional in 85% of the way, it's not that the transfer doesn't work outright and there was a specific error repeatedly, caused by bad connectivity, etc. Maybe I could still try a game to test the data transfer properly. Anyway, this is my first monitor, so I'd like to get some advice before I start trying and solving things myself based on some information.