Asus XG4380 monitor broken

So I bought this in 2020, it’s now doing this glitch for an hour then works for a while again. Asus XG4380

Done - driver update, changed refresh rate, resolution, different cables, factory reset,it’s not the gpu as I tested it in my other monitor similar specs.

Suspecting motherboard?

Any ideas my tech dudes?

Link to video https://youtu.be/tuA25Se7A7o?si=S9mHu0-L6lRm0cib