On workouts erg mode makes you put out way too much power instead of the workout stated power. ATV4K andriod tablet or andriod phone companion app, kickr 17, Zwift play. If I connect to ATV direct erg mode works perfectly. Also bluetooth dropouts via companion app. Zwift app upto date, zwift play firmware upto date. 700+mb/s WiFi6 5.0ghz broadband.