I live in central Illinois and I often stream to twitch. No problems at all since I upgraded my networking equipment a few months ago. I've restarted my equipment multiple times to no avail. I have a Netgear R6400 router and a Motorola MB8600 docsis 3.1 modem. When I stream to twitch I get 20%+ packet loss to their chicago server Live-ord.Twitch.TV. I've included a WinMTR to comcast.net and screenshots of my modems power levels. My twitch bitrate is set at 2000 kb/s. I contacted comcast and I have Upstream Signal Quality (SNR) 30.4 dB. Receive Power Level (upstream)(Dbmv) -0.1 dBmV. I have 100/10 service and I've been getting around 105/3 since having this problem. Its just my upload being affected it seems.
After factory resetting my modem I get these errors in the log:
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
No Ranging Response received - T3 time-out
TLV-11 - unrecognized OID
Started Unicast Maintenance Ranging - No Response received - T3 time-out