id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	phab_field
2179	"Optimization of ""gui sim update"" needed when large groups of units are selected."	RefinedCode		"If you open up the in game profiler, and then select a large number of units you can see a huge increase to ""gui sim update"".  In my case selecting 100 Longbowmen causes the msec/turn to increase from ~1 to ~48 which is more than a third of what the rendering takes. This causes a very noticeable choppiness in game.  It has nothing to do with the status bar or highlight that get rendered but I believe it occurs in the ''updateSelectionDetails'' function in ''binaries/mods/public/gui/session/selection_details.js'' because disabling some of the function calls (like updating the multiple unit panel) start decreasing the load.  I couldn't figure out how to fix this issue though so hopefully someone else can optimize this area?

There is a much larger performance hit when the jsdebugger is enabled but when I took my measurements when it was off, so it would be a pretty good performance increase if the cause of this lag is fixed."	task	new	Should Have	Backlog	UI & Simulation