It’s up to you to answer these questions by reading over the documentation provided by the VPN service provider before signing up for the service. Better yet, read over their documentation and then search for complaints about the service to ensure that even though they claim they don’t do X, Y, or Z, that users aren’t reporting that they are in fact doing just that.
There's a reason why all these VPNs are paid. Providing encryption and VPN services to millions of users is a resource-intensive work that requires servers across the world. A free VPN might be enough for something minor like checking foreign news occasionally. If you need a VPN on a regular basis, however, you’re better off with a reliable paid service.
However, network performance is another thing entirely. First, keep in mind that if you're using a VPN, you're probably using it at a public location. That Wi-Fi service is likely to range in performance somewhere between "meh" and unusable. So, just the fact that you're remotely working on a mediocre network will reduce performance. But then, if you connect to a VPN in a different country, the connection between countries is also likely to degrade network performance.
Supported Client Software Android, Chrome, Firefox, iOS, Linux, macOS, Windows Android, Chrome, iOS, Linux, macOS, Windows Android, Chrome, iOS, macOS, Opera, Windows Android, iOS, Linux, macOS, Windows Android, ChromeOS, iOS, Linux, macOS, Windows Android, iOS, Linux, macOS, Windows Android, iOS, macOS, Windows Android, iOS, macOS, Windows Android, Chrome, Firefox, iOS, Linux, macOS, Windows Android, iOS, macOS, Windows
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