You can make the artifact less visible if:
1. Switch video mode to 90 fps (if it is possible) to get smoothing ratio Movie x3.
2. Select Frame interpolation mode to "1m" or "1.5m". It gives less artifacts but less fuidity.
3. Select SVP shader to 10. By blocks. It will change artifacts from wavy to block artifacts. They are more comfortable for eyes and less annoying.
You can use one of that rules or all together. Just try.

