Turns hibernation off and deletes the hidden hiberfil.sys file, which is sized at a large fraction of your RAM (often 8–16 GB+). Frees that space immediately. Side effect: this also disables Fast Startup (which relies on the hibernation file) — generally a good thing, as Fast Startup causes its own quirks. Reverting re-enables hibernation. You lose the ability to fully hibernate (not the same as sleep) while it's off.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/troubleshoot/windows-client/performance/disable-and-re-enable-hibernation