See below for thread that covers “avatars flickering in large groups”
Haven’t seen a crazy head bob but could imagine that would be a pain. Maybe just ride the tron which doesn’t sit-up in draft (if you have/like the tron that is).
I dont get the mad flickering of riders in/out of large groups but get a bit bugged about chat also being limited to closest 100 riders. Thats a pain in large and longer rides/races when a bit of chat helps break the boredom.