I've had a Cycleops M2 for a few weeks; started with Zwift, then went to Rouvy to check out the real location video rides (plus, it is the native app for the trainer that updates its firmware).

With Zwift, the user is able to lower the effect of the resistance on climbs, which I did to try to dial in a more realistic application of force. I have found no such adjustment with Rouvy, which is frustrating because the ascents are in no way comparable to real-world climbing.

I can pedal a 12-15 percent gradient at an average speed of between 8 and 10mph (real world); a 5% gradient in a Rouvy training video is nearly impossible - lowest gear, much mashing, and I end up abandoning the ride after only about 6 miles.
I have run both cold and hot calibrations, but this is still occurring... I have contacted customer support, but until they decide to respond, I was wondering if anyone else has experience with this training app, and knows of a workaround...