I have Proton’s most advanced plan, including their full suite of services and the VPN. I’ve been using it for over a month and it works well. It does exactly what I expect from it.

Advice for those using Proton VPN on PC:
A small trick if you can protect more than one device with Proton. Exclude the browser from the software and let the extension handle the VPN. Your usage will be more flexible that way.