Often. It is becoming a big problem. In the last couple of days youtube has become almost unusable. Reddit is usually blocked. Twitch shadowbans chats. A lot of random unexpected sites block it like wiki pages. Captchas make google too annoying to use (but mullvad has its own proxy called Leta but it lacks features like suggested corrections to the search). I still use it always and persist despite this. Often hopping servers will work but I might have to try 5+ different servers