Support Indoor Bike: Schwinn IC4 - Bowflex C6 - Schwinn IC8 (Europe)

Wow, this has not been my experience. I’ve got the Bowflex and I feel like I’m killing myself (max heart rate, high resistance) and I’m never at the front of the pack. Based on my fitness level and road rides with others, I’d be surprised if I was really at E level, but that’s the only place where I can keep up. Is anyone else in my boat?