UPDATE December 18 Several threads reporting resistance issues with game version 1.104 will be merged under this post. We’ve discovered the root cause for the “I can pair my trainer, but don’t have resistance” issue thanks to the details that you provided in this thread, and are working on a patc…

In case this is useful for anyone else on the Wahoo Bike Shift. I found that when riding the power numbers being displayed on the Wahoo App did not match those being displayed in Zwift for the same gearing and cadence. e.g gear 1-5 at 90 RPM was giving 90W in the Wahoo app but 50W in Zwift. Switch…

Today I was doing a workout in resistance mode. During the workout I already had the idea the resistance fluctuated which is strange as I have an Elite Nero and for the resistance to change a worm screw must be turned. Anyway right before the end of the workout the resistance suddenly greatly incre…

No spin down calibration option for the Kickr v5, as it auto calibrates. Ride yesterday, definitely 3 gears higher for same output The lack of focus/reponse from Zwift telling. They break things constantly with new releases, but very slow to address/fix bugs @shooj @John_Zwift

Having “attempted” an ERG mode workout today, can definitively say resistance is still bork.

Yes! I’m writing this from the indoor saddle during stage 5 tour de Zwift, tour of fire and ice on the Alpe. Zwift ride with cog, on Garmin Tacx Neo2t trainer, connected through Zwift companion mode on Apple TV. Still facing this issue where all of a sudden resistance changes dramatically and I spin…

I emailed Zwift support on this, and the issue was closed without any action. That says a lot about Zwifts focus on this issue…

Your concern is very important to us. Please continue holding for priority handling of your concern. elevator music plays

The issue persists. My Kickr Core 2 abruptly loses resistance; shifting up provides a temporary fix, but I then have to fight against very high resistance until it levels out again. Furthermore, the shifting performance is disrupted afterward. This problem consistently occurs after coasting. Current…

[image] Michael_Wollenschein: The issue persists. My Kickr Core 2 abruptly loses resistance; Have you contacted wahoo or zwift support? I dont see any other reports like yours on the forum, seems like if this was widespread there would be numerous complaints.

Have you done a TrainerDX log analysis? Anything interesting in there?

Resistance issues in game version 1.104 [December 2025]

Known Issues

Topic		Replies	Views
FIXED: Trainer Resistance Issues (Mainly on iOS Devices) Known Issues trainer , resistance	184	36436	September 1, 2021
Resistance issues after update Bugs and Support resistance-error	79	9699	August 17, 2020
Game update v 1.104 [December 2025] Zwift Game	221	8765	January 13, 2026
Trainer Resistance \| Trainer Difficulty too low, Simulation and ERG mode do not adjust resistance [January 2023] Known Issues zbri-4067 , brevcon-1301	358	23605	May 15, 2023
Odd resistance changes in ERG mode [September 2021] [1.17.x] Known Issues hdwint-3770	75	7283	January 24, 2022

Resistance issues in game version 1.104 [December 2025]

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