Sluggish UI on large files?

The GH definitions I work with typically have about 500 components on the main grid, with 6-8 clusters totaling another 1000 or so components… so it’s normal for recalcs to take 15 - 600 seconds, and I get that.

What I don’t understand is why selecting or changing components has a 1-2 second pause, even if the component is freshly placed and not connected to anything. I can plunk a new graph mapper down, totally disconnected from the rest of the file, and adjusting its type and control points is very very sluggish.

Am I doing something wrong, or is there something out of whack with my files, or is that just a normal UI quirk in GH? Or is there some reason that even disconnected components cause some kind of recompute that slows the UI substantially?

File > Preferences… > Files > Disable AutoSave or disable it from happening when adding objects or wires.

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Oh, thank you!