Is setting part properties through a script more efficient than through the “Properties” tab

[TheGamer101]

This is not correct. I think the post you are thinking about is this post which has a good explanation of the optimal order to set properties in a script.

PSA: Don't use Instance.new() with parent argument

I’ve discovered a pretty bad performance issue in one of top games that has to do with Instance.new and wanted to write about this, since this is not obvious unless you know the system inside out. Tthere are several ways to create a ROBLOX object in Lua: local obj = Instance.new(‘type’); fill obj fields local obj = Instance.new(‘type’, parent); fill obj fields local obj = util.Create(‘type’, { field1 = value1, … }) If you care at all about performance, please only use the first option - I wi…

The key is that you want to set the Parent property last always, adding a new Instance to the DataModel before it is fully initialized causes the game engine to do extra unnecessary work.