Sorry in advance for any mistakes I might make, English is not my first language.
I build my PC a few months ago and I managed to get a 3080 but before that, I had and old AMD graphics card a friend lend me in the mean time, however I noticed some errors here an there, like some images having rainbow lines or textures being out of place in games. I thought this would change when I install the new graphics card but it didn't.
I tried updating the bios, changing the PCI slot, updating every driver possible and nothing changed, I'm a bit suspicious about motherboard but I'm no expert, any help is apreciated.
View: https://youtu.be/wIZyOjbNMu8
pc parts:
RTX 3080 ZOTAC TRINITY
2xHyperX 16GB 3600
Msi Gaming Egde B550 Wifi
Ryzen 7 3700x
Corsair Mx750
I build my PC a few months ago and I managed to get a 3080 but before that, I had and old AMD graphics card a friend lend me in the mean time, however I noticed some errors here an there, like some images having rainbow lines or textures being out of place in games. I thought this would change when I install the new graphics card but it didn't.
I tried updating the bios, changing the PCI slot, updating every driver possible and nothing changed, I'm a bit suspicious about motherboard but I'm no expert, any help is apreciated.

pc parts:
RTX 3080 ZOTAC TRINITY
2xHyperX 16GB 3600
Msi Gaming Egde B550 Wifi
Ryzen 7 3700x
Corsair Mx750