The SSL tracker is a more secure option. Some VPN providers, certain torrent clients, and some proxy services don't play well with the SSL tracker. I would suggest enabling the SSL tracker option so that all new .torrent files that you download will tell your torrent client to use the SSL tracker by default.
If you want to test whether or not you will have issues with the SSL tracker option, you can try changing the tracker URL in your torrent client for an existing torrent. To do this, simply change the beginning of the URL.
Change this: http://tracker.gaytorrent.tw:2710/
To this: https://tracker.gaytorrent.ru/
If you are able to switch over to the SSL tracker without any issue, then I would recommend that you change ALL your existing torrents over to the SSL tracker, and enable that option so that all future downloads are automatically branded with the SSL tracker, instead of the regular tracker.