I can't believe how fast the interface is now. Don't know what benefitted more, the switch to rtorrent-ps, update to ruTorrent 3.9 or the php max memory limit. I started from scratch except copying the rtorrent.rc config file and rtorrent session folder.
With the newest ruTorrent version the annoying scroll bug (keeps uncontrollably scrolling, happened when many torrents in current table) is fixed.
The slightly bothersome warning triangle is now also gone, port is correctly showing as open.
All in all 10/10, as a token of appreciation I send a little donation your way!