wuauserv is a Windows Update process, it runs in the background, collects all your Windows configuration data, then passes it back to the UpdateGenerator process which communicates with Microsoft's Windows Update servers.
It's notorious for hanging the system and eventually consuming all available memory. Highly component driven, filled with all sorts of bugs that even Microsoft apparently can't fix, lol.
Here's some common fixes which work for some people.
Here's a handy trick to control Windows Update background behaviour.I would actually just kill the process and disable Windows Update, then run the updates manually every month or so, Microsoft only issues monthly rollouts anyhow. Better yet, find the list of Windows Updates needed for your particular Windows flavour (Win10 Home or Win10 Pro), then download them manually through the
Microsoft Update Catalog (the one and only site I visit through IE, since it of course doesn't work properly on non-Microsoft browsers), then install the downloaded updates manually while offline. While you're at it, you can search for lists (and opinions about) "bad" or "undesirable" Windows Updates and deliberately avoid installing them - no need to install Microsoft's "telemetrics" (spyware) and the like, no need to overwrite already-working drivers with Microsoft's WHQL-certified lesser versions, etc.
But imagine the awesomeness of being the first guy to post online screenshots of a single glorious process bloated out to 100% CPU and 64GB RAM!
You can disable other background WinOS tasks like Search Indexing to gain significant power (and temp) reductions with minimal impact on performance.
Running full scan for malware, viruses, etc, never hurts.
The "ROG Gaming Center" software looks like the thing you'd use to balance performance vs power vs heat on your hardware. I'm not familiar with it, nor with other ASUS/ROG software like AI Suite, DIP5, Q-Fan, etc, sorry can't offer advice about proper settings.
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