Id maybe start by looking into your internal settings as an easier fix.
Buuuut, for me it's pvp. The game locks up. Players appear and disappear even if I have true sight applied and it's not a stealth class. I've kind of learned to adapt to the lag which usually means healing early and being very defensive cause you can't trust your eyes. A character will literally be across an area but I'll still be getting hit.
Anytime I apply haste the amount of time it takes things to load in, is insane. Like if I am in a zone there's invisible barriers everywhere. (Even if there's not many people)
Id describe it as mini time freezes like you are. It just takes more going on to get me to that point.
My computer and internet is decent so like I just assumed this was an engine issue.
I am not on a team.
I do not win, I do not lose.
I tell a story, and when I'm lucky,
Play a part in the story you tell too.