The ASCOM driver for the Moravian camera also controls the filter wheel and it is designed only to set the filter wheel to the commanded position at the start of the exposure.
When SGP sets a filter position all that happens is that the required filter position is set. The filter does not move at this time.
It looks as if when an exposure is started the Moravian camera driver will set the filter position and wait for the filter wheel to reach the correct position before starting the exposure.
SGP can't change this and setting a settle time won't have any effect.