I have found a better way to controll tap tempo with the Groun Controll pro. I have assigned an IA function to send a Midi CC message to the tap tempo in the Timefactor's midi input.
Go into TImefactor's RCV CC menu and assign the tap tempo cc to any value that is not already being used. Then, go to the GCP IA menu and assign any of the 8 IA swithces to send a CC message to that CC value. Then you have a dedicated tap tempo button on your GCP for all presets and you don't have to utilize a loop.
I hope this helps.