Help ! Graphic issues on Onyxia

Hey all!

I downloaded [a client from another server] not too long ago and started my journey on Onyxia and while i'm having a blast, i am experiencing some weird visual issues, that i would love to get rid of.

Anyone on here have a tip for me on how to fix it would be deeply appreciated!

I've linked to a screenshot below, so you can see exactly what im dealing with. Shades of red/blue/purple glitchy lines appearing on my screen. They appear and dissapear depending on the specific camera angle, but they keep popping up.

https://imgur.com/a/z4STOSX