So Vivaldi partnered up with Proton, and integrated their VPN in the browser. Not really something I normally feel the need to use, but I decided to give their free VPN a try since it's right there.
I'm not seeing an immediate speed impact, which is surprising considering I'm not paying anything, and a VPN inherently adds overhead. There's probably just a small amount of latency that isn't that noticeable while browsing.
I tried out Google Maps, Bing Maps, and OpenStreetMap to see where they think I am now. Neither of them can get an exact location, but some pick a vague default location. Google thinks I'm somewhere in India for some reason. Bing thinks I'm in the Netherlands, which makes sense, cause that's the free server ProtonVPN assigned me to. OSM has simply no clue, and just opens up the map wherever I was last looking.
Found a small forum that apparently just hates VPNs. Otherwise... yeah, it does what it says.
@beardalaxy Did a speedtest, but changed the test server to what would be my normal local server, and got full download speed. So either it's not limited, or the limit coincides with my normal download speed.
Upload speed seems indeed to be limited a bit, but my upload speed is bad anyway, so it doesn't actually matter much. And I'm not planning to do p2p with my browser anyway, so that's not an issue.
For just small browser stuff, this might be surprisingly useful.
@alyx the free version of proton is speed limited but probably not enough to notice during regular browsing. you also can't do any p2p with it.