Honestly at the potato settings non-partner Twitch will allow you to stream, great graphical quality you don't need for the PC. I'd dare say increasing the bitrate will only make the stream unwatchable for most because they'll need more bandwidth than necessary to watch.
but all i know is streaming an old ass arcade game so your mileage may vary.
but all i know is streaming an old ass arcade game so your mileage may vary.