Wandering Trader not despawning

I have this Iron farm that I afk on then when I woke up today I saw tons of wandering trader. So I updated to 1.16.4 Vanilla I tried this out for 2 hours because a wandering trader despawns in an hour even with a nametag. It still did not despawn. This thing should be fixed as soon as possible because it is messing up my crappy pc just look at the fps Hahahahaha.