Windows 10 Hibernate

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(1) If I disable hibernate, apart from gaining some GB space, does it have any adverse affects on the system?
i.e. Does it have any affect on startup time etc?
All my power settings are set to never.

(2) I have te option of installing Windows 10 Version 20H2.
Should I install now or hang on for a while?
Basically what I’m asking is whether it is stable?

Thanks

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