Manual updating will do. You can refer to many such guides available around, just google.
Some issues I have experienced are Overheating in casual usage and poor Ram Management on 6gb variant. Sound Issue was fixed, after I followed a guide.
I must admit that Battery backup is excellent in beta 2. This is perhaps the only benefit of this update and some smoothness in ui. Semi-Stable update, imo
If you wanna update, you may do so. But considering the side effects you might not. Yes, I recommend you to wait for the stable update like others suggested.
If you still do update to beta 2, the updating to stable shouldn't be really a problem. Manual Update or FOTA will do.