You could disable timeshift, remove picons, uninstall bootlogoswapper and any other plugins you don't use or think may help. There are too many users without issues for it to be a WooshBuild issue to be honest and if you are using WooshBuild Infinity it is the smallest WooshBuild so far.
Using a pure openATV flash, as siilver said, you will get the fastest experience possible but again you will need to install xc plugin, epg importer and then any skin you want to use manually as well as change all settings manually.