I’m posting findings here in case this helps anyone:
- This problem may be caused by nvidia driver versions but unclear and with the current state of nvidia drivers, the one I’m using would be the most stable
- Switching the desktop renderer anti-aliasing method from the default TSR to FXAA eliminates this strange shadow ghosting problem but FXAA introduces some occasional shimmering at some angles
- Trying to use Lumen/ray tracing doesn’t fix the issue
- Using DLSS/DLAA eliminates the shadow problem but can introduce artifacts in images (as expected with any non-raster renderer)
- Increasing engine scalability settings from epic to cinematic doesn’t fix the problem
At this point, there simply doesn’t seem to be a solution other than potentially playing with drivers which would be uncertain. If anyone has any insights/actual fixes, please contribute.