What is there to config? It works fine for my out of the box. Maybe you'll want to increase the limit for simultaneous active torrents and peers in settings. The Auto Limit settings are totally on you, the default rules will work okay but you need to set your "safe ping" that, if reached, will automatically slow down transfers and the IP to be pinged.
Check this out just in case: https://forum.tixati.com/support/3328
PS: You have 300 MBit/s down/up, that's 300/8=37.5 MB/s. I don't think you will find many or any single torrent that will get you this speed.