Can't emphasise this one enough.
Usually by chasing little "hacks" you will often just make things worse. Most things that inevitably need doing, your OS and hardware does a pretty good job at dealing with itself. Anything that tries to optimise driver updates, turn your PC into "gaming mode performance" profile, and the like should be firmly avoided and you'll find your system will be more optimised and encounter far less issues.
But overall the other key points I would always reiterate:
- Anything important should always be backed up automatically/regularly. Silly, yet still something we have to tell people on a daily basis.
- Use a cross platform password manager if you use multiple devices and have lots of accounts - the cost pays for itself in security.
- Multiple monitors and solid state drives save more time than most other things will, and it will be noticeable.
- Autohotkeys for people who repetitive run code or text and don't want to keep retyping it.
- Microsoft Windows "Tips" app in your start menu is underrated for those who don't know some of the subtler things you might be able to do with Windows.
- Get rid of junk and software you don't use, and then don't mess with anything else based on the advice given on some random website.
Sometimes the simplest and most efficient thing is to just leave some things alone - then just get the software you need that is cross platform to suit your work needs (there is a reason why Microsoft Office is the most used).