I am starting to think there's something wrong with my Faveros and my feeling of excessive RPE compared to watts is simply a sideproduct of my power meter reading low. This was an easy endurance ride, just over 200W, with a small side-tailwind. The speed seems quite high for the watts especially since I don't consider myself that aero, being big and high on the bike. Tomorrow I'll compare with my Quarq, see if there's some discrepancy there. The faveros used to be spot on with my other Quarq spider PMs, but the power has seemed off for a few sessions now.