In the RTX Beta, it always seems to have upscaling on by default, however every time I join a world while it is upscaled, it seems to be ghosting much more, with outlines appearing around illuminated objects and unstable animation. This is not because of the graphics card, due to the fact that it is still running smoothly while upscaled. 

Here is the link to the video since the video is bigger than the upload limit. 

https://youtu.be/BfcNV31gT9U