See here for more details (or see attached video): [https://discord.com/channels/372898201088426004/372899380367458329/826160411232698428]

Unity 2021.1f0, Windows 10.

Repro steps:
# Open a project
# Set up a gameobject with an embedded script or state graph
# Edit the graph and make it as large as possible (to make the effect as noticeable as possible)
# Have the inspector for the gameobject visible
# Have the graph window visible
# Drag around on the graph window, notice how slow / fast it is
# Hide the inspector or the machine component on the inspector
# Drag around again to notice how much faster it is

Reported by Discord user @PurerLogic

!image-2021-05-05-16-34-06-296.png|width=881,height=224!