I don't use it no, but URP modifies shaders sooooo... maybe it screwed something up. Reset your shaders from URP if you can, if not, reinstalling the P3D Client will restore the default ones too.

7 hours ago, DatJarDoh said:

Do you know what Ultimate Realism Pack is? If you have that installed, do you have the same issue as me?

To refresh your shaders go to: C:\Users\<YOU>\AppData\Local\Lockheed Martin\Prepar3D v2\Shaders 

Deleted them and they will be recreated it when you restart PD3.

Regards,
Simbol