UE 5.3 Visual glitch - What is causing this?

Hi all.
I am having some strange issues with this glitch

Its really only started happening in the last week. after months on this project.
just out of no where.
it only does this in full screen mode in the editor view port.

I did add Ultra dynamic skies recently and wondering if this could be a cause.

any help would be great thank you

You could try disabling Ultra Dynamic Sky to test this.

But it looks like it might be a video driver issue, like something crazy is going on with the upscaler. Maybe try changing the AA method you’re using.

Yeah I did update the drivers recently. Thanks for the advice. I’ll get back to you on the result