If you have a "wheel-on" smart trainer such as a Tacx Bushido or a KICKR SNAP, you may find you get slipping on steep gradients.
- Pump up the tyre to at least 100PSI
- Make sure you are using the correct roller tension
- If the problem persists, tweak your FulGaz settings
Go to Settings > Recommended settings for smart trainers.
You then see the recommended maximum slope to use with your trainer in FulGaz. You can tweak this further by looking at the gradient where the slipping starts and then dialling it back a degree or two.