So, I just logged onto my desktop an hour ago, and I noticed my computer acting super slow. On windows update, it says "2022-10 cumulative update 21h1 (Kb5018410). It’s been stuck on 20% for about half an hour now. Is this a super big patch and does it normally take a really long time to download?
Based on the KB number of the update, I’m assuming you are using Windows 10?
You said stuck at 20%, is that 20% downloaded or 20% installed?
The current version of Windows 10 is 21H2, so if you are still on 21H1, then you still need the 21H2 update.
You can manually install the 21H2 update from here: https://www.microsoft.com/en-us/software-download/windows10
Even better would be to upgrade to Windows 11.