Wattbike power problems

Hi guys - please can someone help as I’m at my wits end ha! I’ll never be Pogacar but I’m really enjoying Zwift and this is really spoiling the experience. I expect to be finishing at the back of races but I try to improve on my own stats but they have suddenly dropped.

I was recently upgraded to Cat C around the time the latest zwift update came out. Since then, I am having to push so much harder yet my power output seems ridiculously low (my heart rate data remains consistent, although on my latest 2 rides I have had to use a fitbit as my wahoo tickr is being repaired).

Is anyone else having the same issue? I was climbing in gear 8, pushing almost as hard as I could and my power output was sub 200w which just feels wrong. The climb I just completed took my over a minute longer than my best (only a 6 minute climb) yet I was pushing much harder.

I run a wattbike atom v2 on windows

Thanks for any help guys!

I normally spin in 10/11 at around 150w/75rpm.

200w in 8 doesn’t sound that unbeliuevable - I use the 22 (I think) gearing setup.

Hi. Thanks so much for coming back. But even on the flats it was so much lower than I’ve had before, I weigh 85kg so it was giving me around 2w/kg up climbs at times which I know is so different than this time last week pre update.

On the flats I was about 50w down on my conservative expectations - I think you get a feel for these numbers over time and I just know something has changed

Also, I do usually climb in 11/12 (22 gear set up) but it is now simply too hard to spin in those gears where it hasn’t been in the past. It almost feels like im 50kg heavier or something

Same for me. 1st gen Atom, latest stable firmware (also tried beta), 22 gear setup. Windows laptop. Latest Zwift update just makes hills ridiculous compared to previous operation. Spinning nicely at 80ish RPM in gear 13/14 used to be fine on shallow (4%) hills, normal effort producing 230-250W. Now I’m having to push hard to maintain cadence in that gear and hitting 300+W.

Silly question, have you both checked to see if your trainer difficulty (on zwift) is set at the same level it was before?

I haven’t noticed any change on my v1 since the last update (I’m running Windows 10)

Thanks so much for the suggestion James, yes still at 50% as it was before unfortunately.

The difference is marked, so glad someone else is experiencing the same!

Same as Daniel - unchanged at 50%.

Just did Sand & Sequoias. 75 rpm, gear 13 rolling along at about 240W. 3% incline comes along and keeping that gearing/cadence has me on 315W. Shouldn’t be getting a third more power on a tiny bump of a molehill.

I’m having the same issue on my wahoo kickr bike following the latest update. Kickr bike is meant to be accurate to +/- 1%. HR is consistent, however power numbers seem incredibly low for the RPE. I’m not sure what’s going on, but something has definitely changed following the major Zwift update.

I’m afraid that I don’t have an answer for you all, but I would suggest contacting support with your latest fit files and see if they are able to see anything odd.

Thanks James. The other thing that’s occurring simultaneously is that the power readings are fluctuating wildly - even on the flats at a constant RPM - and even with Zwift settings set to display 3 sec average. Might have to use something to record the Zwift app on the iPad to show the support team

It sounds like it is showing your actual power, rather than the smoothed power the wattbike usually shows.

Matter of interest how are you connecting? You dont have both the Wattbike hub & Zwift open and running at the same time?

The watts wildly fluctuating used to be an issue if you tried to run both at the same time and didnt start the devices in the right order.

Hi Lee

I plug my bike into my windows surface pro directly and never run the Wattbike hub.

Thanks for the help!