Lag when placing heads of non-existent players when on servers

Cannot reproduce.

I don’t get any lag from it, can you send a screenshot with the debug screen open?

It has to be a head with the skull owner of a non-existing player; /give @p player_head{SkullOwner:"hellotestnfhfjsidi"}

You can also place alot of player heads like that to prevent someone from joining

A similar issue occurs in singleplayer as well. I created a new world, traveled to a far location, executed the command and spam placed the head down. It does not stutter or cause frame drops, but when monitoring the lag with Alt+F3, the graph completely stops for a couple seconds. This does not happen when the head has an existent owner. This might be a completely different issue though.

Still unfixed on 1.17 RC 2

You can add the affected version yourself instead of commenting it 🙂