protonvpn at least in EU is offering a free fast server based in NL. I would have a look
Personally I am using since awhile (and there are also other countries available for free). Streaming is also working fine but I didn't make any specific test with heavy file. Of course other options suggested are very good... the free option has some limitations for choosing the connection server and so on...
You know how they say: if something is offered to you for free, it means that you are the product. And if you are looking for VPN that is privacy oriented, I would definitely stay away from free options.
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I generally agree with your statement. While i consider Proton offer better privacy than regular tech company, their free plan feels too generous considering no data limit and "medium" speed. Meanwhile other company put more strict limit on their free VPN, such as 10GB/month data limit on windscribe.