I don't have any sort of reboot, I do a clear cache, repair apps and galaxy booster. Never had no issue like you have unfortunately. Is it not something to do with Modes and routines if you use them as they are hit and miss at moment.
These constant threads about when the next beta will be coming helps nobody. Only the devs know when it'll be here and it just raises some people's hopes when somebody without inside knowledge posts 'it'll be here today or tomorrow' and then they moan when it doesn't arrive! It'll be here when it's ready - it's not in Samsung's interests to withhold it for no reason.