In case useful, I've just discovered that on RFLink32 (https://github.com/schmurtzm/RFLink32-F ... -RF-Bridge) the up/down commands work properly - i.e. send the blind all the way up/down.

I have the same issue - the up/down command only moves the blind a few cm (slower than when using the remote). I'm using the Nodo 433.420 gateway and HomeAssistant. Don't suppose you've managed to make any progress here, Stuntteam? Let me know if I can help test/debug.