You’ll get slower download speeds. Running your connection through another server inevitably slows you down, though how much depends on what torrent you’re downloading, who from, and a lot of other factors. In my experience, more popular torrents stayed at their top speed of 3.4 MB/s (my bandwidth cap) with a proxy, while other less popular torrents slowed down from 1 MB/s to about 500-600 kB/s. Your mileage may vary. I lost significantly less speed with Private Internet Access than I did with BTGuard, though.
The blockage of torrent websites by governments and ISPs isn’t the only reason why you need to look for the best VPN for torrenting. Streaming of pirated content is illegal and can put you on the wrong side of the authorities. Depending on your region, you can end up receiving a DMCA notice. Your ISP can also decide to throttle your internet as they can always see what you are doing on the internet. Thankfully, all these concerns can be averted by the use of a private and secure VPN.
I submitted several other queries designed to gauge the knowledge and efficacy of the team (all of them were submitted at similar times) and all of these queries were answered in a similarly timely (and brief) manner. To ensure that my experience was an accurate representation of their customer support team, I also reviewed their social media accounts to see how well they handled other customer complaints and questions.