So, I reset my modem a few weeks ago and was using it without any changes. Today during the game update, I noticed I was getting high ping, even with sqm enabled on my openwrt router.
router and modem are in bridge mode.
So, I tested it with different sqm settings, setting my speeds 85% and 90% of actual speed, but still ping was all over the place during the game update. I checked my modem settings and QoS in modem settings was off, I turned it on and DSCP value to AF11. And all of sudden ping drops normal.
Can anyone explain why I need to also turn on QoS and DSCP marking in the modem settings? Even when SQM is enabled in openwrt router.
In the attached screenshot. flat line is with DSCP marking.