I wonder why it is that it takes several orders of magnitude more cpu to deal with public tracker torrents (many trackers, dht, pex, local peer discovery) vs private tracker(single tracker, no dht) torrents. I had a large number of torrents seeding (not actively, only <5 at a time active) and I removed a majority of the public tracker based torrent files (Which again, weren't even active), and the cpu usage went from ~30% down to ~5%. This is a difference of ~60 torrents out of 1.5k total. Would it be possible for there to be optimization done in this area? I feel like a majority of utorrent's userbase probably uses public tracker torrents and would benefit from optimization in this area.