Adding Fit Contributions to an existing datafield increase the PRG build time extremly

I added 3 fit contributions to my existing datafield „Edge AllinOne1“ 
and that increased the build time for the prg file from 15 seconds to 5 minutes!

https://apps.garmin.com/en-US/apps/cd433835-4089-476b-a0cf-0c13db63a18c

I then did some tests and added the fit contributions one by one - 
here is the result for build time:

-no Contribute at all:       build time: 15 seconds
-added one Contribute:  build time:  1:15 minute
-added 2 Contributes:    build time:   2:20 minutes
-added all 3 Contributes:  build time  5 minutes

If you want to investigate the case further, please send me a PM or an email. I would then send you the project for further investigation.

Here is the code to comment out or take in contribute by contribute:

        // CONTRIBUTION+++++++++++++++++++++++++++++++++++++++++++++++++++++
        if ( showBatteryGC == true )    {
            mybatteryField = createField("devicebattery", batteryID,  FitContributor.DATA_TYPE_UINT8, {:mesgType=>FitContributor.MESG_TYPE_RECORD, :units=>"%"} );
            if ( mybatteryField != null ) {
                mybatteryField.setData(0);
            }    
        }

        if ( showShiftGC == true and gearArt > 0 )    {
            if ( gearArt == 3 ) {       // front Gear
                myfshiftField = createField("frontShift", fshiftID,  FitContributor.DATA_TYPE_UINT8, {:mesgType=>FitContributor.MESG_TYPE_RECORD, :units=>"Idx"} );
                if ( myfshiftField != null ) {
                    myfshiftField.setData(0);
                }    
            }    
            myrshiftField = createField("rearShift", rshiftID,  FitContributor.DATA_TYPE_UINT8, {:mesgType=>FitContributor.MESG_TYPE_RECORD, :units=>"Idx"} );
            if ( myrshiftField != null ) {
                myrshiftField.setData(0);
            }    
        }
        // ENDE CONTRIBUTION+++++++++++++++++++++++++++++++++++++++++++++