User Experiences with Microsoft PowerToys on Windows 10

I've been hearing a lot about Microsoft PowerToys for Windows 10 and how it can enhance productivity with some nifty features. However, I'm a bit on the fence about downloading and using it. Can anyone share their experiences with PowerToys? Specifically, I'm curious about:

1. How stable is it on Windows 10? Any issues with crashes or bugs?
2. What are some of the most useful tools or features you've found in PowerToys?
3. Does it have any noticeable impact on system performance or battery life for laptops?
4. How easy is it to set up and customize to suit individual workflows?

Would really appreciate hearing from those who have been using it for a while!