Top tip - If riding in a Zwift breakaway group always check that the guys pulling on the front at least have the "lightning bolt" icon next to their W/kg, which means they are using a Smart trainer. No "lightning bolt" means they are using virtual power and should therefore be ignored. I wish Zwift would segregate users based on their trainer type and just make them invisible to other users. Or at least give you the option to toggle them off. It only takes one or two grossly over-powered muppets to ruin an event by ripping groups apart or forcing a pace too high for a break to get away.