I dont use Arrest Manager nor PeterUCallouts I personally expericenced crashes with them along with recieving callouts when I hadn`t finished a previous callout ( I use ForceACallout plugin now and set my own availability for calls) its mostly stable I can play for a few hours it will still crash from time to time but then again I look at it like we are using plugins inside a plugin inside another plugin so what can we expect 😄.