The zwift hub really struggles with short intervals getting to the interval number, do I just ignore it?
Shorter intervals are often tougher on most trainers if you’re using ERG mode. There usually just isn’t enough time for the trainer to adjust to the resistance needed for the interval, and then, once it finally gets there, the interval is nearly over.
It might be worth trying to do your shorter intervals without ERG mode. We have instructions on how to change your smart trainer’s modes while using the TR app here.
Feel free to let me know if you have any additional questions on that!
How short intervals are you meaning?