Get a cheap travel router from gl.inet and set it up as a VPN client with its own wifi ssid. Turn on its leak protection (drop connection when VPN is inactive). Connect your devices to that, and delete your main wifi credentials from them so they don’t accidentally hop back on.

Torrent to your heart’s content.

I actually browse full time like this; all traffic leaving my house via my ISP is VPN (or some limited exclusions that all use TLS).