[TF2] Stuttering when healing a teammate on a listen server

[JoriKos]

When I heal people in a listen server, my game looks like it's skipping frames. Not sure if this is listen server-exclusive, but it doesn't happen in Casual servers (maybe Linux/Windows server difference?).

To replicate, simply spawn a friendly bot after using the map command, then start healing it. When running around, the game stutters heavily.