So,it's because ur computer is getting old.Itvwill only make it a little fast if you free up space,I just reccomend getting a new one.If only apple used smart switch .-.

We found the info on Google,it said you need to get a new controller before playing if it's blinking slow.if you have a controller that's pblinking fast,then you replace the batteries. Happy Fixing! <3 ♡