As in the title - just had a Random Normal dungeon and during the main boss fight suddenly my character totally disappeared, even though I could move around the map. all other characters froze compeltely. You can see the video to see the problem. Because of that I totally omitted the main boss fight. This happened a few times in the past, not only during the fight but during normal exploration. Mind that I have good internet and had no problems with any game ever, ESO also works like a charm except for this problem.

https://www.loom.com/share/280bddea89384acc8e0ffd03c92ee5c7