Body Position Works After A While After Parenting It To Another Part But Works The Second Time

[Forummer]

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…

So instead of doing something like this.

local part = script.Parent
local bp = Instance.new("BodyPosition", part)

Do it like this.

local part = script.Parent
local bp = Instance.new("BodyPosition")
bp.Parent = part

The former is unopitimised and can often extend the operation time considerably.