Fibaro dimmer 2 minimum brightness

I have a problem with Fibaro dimmer 2. They do not dim low enough. That problem is solved by changing minimum brightness parameter to 2. (overriding the auto calibrated minimum) BUT that also causes the dimmer to take a long time to turn the lights on. Up to 5 seconds from pushing the switch to the lights turns on.

When I recalibrate they turn on instantly, but the minimum brightness problem is back.

I have also tried connecting a bypass and calibrating with bypass, but the minimum brightness remains the same.

Does anyone have a simmilar experience