I've had this issue for a while and was "living" with it, but I htought I should report it in case there is a solution.

I connect to the telescope and this automatically connects to the TI Dome. However, it takes 2 minutes before ACP reports that the dome is "homed" (I have "Automatically home dome on forst conn. checked in ACP's Dome Ctrl. preferences). I t is only at that point that ACP can control the dome to actually open the dome shutter.

Is there something else that should be checked to avoid these 2 minute waits.