Same issue here. I can not find resistance level that works for me on Neo 2. Also resistance mode on TR feels different than resistance mode (slope mode) on Zwift - there is much less momentum on TR.
At 12-14 resistance changing gears in the middle of my cassette brings a difference of 5-10 watts at the same RPM, which is too little. It used to be closer to 30 watt difference where I could play with the cadence and bring it up or down by ~5 rpm to zero-in on power that I want. The net-net of this is that I have to change gears a ton to complete a workout.
Finally for anything with IF >= 1 I used to be able to find a gear in big ring that works, then shift to small ring for recovery intervals (.4 IF), now it takes switching to small gear + 2-3 rear cassette clicks to get there.
Idk if this is a Neo issue or TR issue but I don’t have the same issues on Zwift which makes me think it’s TR.