Further findings:
All Env's start at the 1st step of the release phase
Variant that almost works:
Set the rate to Sync (1/4)
In the DAW a Midi Event is defined
Now start the DAW, the 1st step is only correctly started at the 2nd 1/4
Well the best varante:
If you switch the Env's to ADR, the 1st step will be executed correctly, but then the gate length will have no effect anymore.
But even here, the 1st step when starting the DAW only at the 2nd 1/4 run.