Hello,
I have artifact issue both on editor/gameplay and Cinematic render.
Its mostly happens when I use RectLights, No matter to bake lights, change many settings.
And they are moving while my camera changes position/direction etc.
There has been some odd results with the latest Nvidia drivers. If you updated recently you can try and roll back. If these are VSMs, make sure you are not over-subscribed. You can try to switch to Raytraced shadows as a test to see if its your shadow maps.
