Intercom - Sluggish

Whilst my initial setting up was a hair pulling process due to the instructions being wrong and the connection of one of the cables was not detailed… so hope for everyone else this has now been updated. If you have a FERMAX NR-0208 (Ref: 20440)Y’all need to have:A-1 - 3A-2 - 6A-3 - 2A-5 - 1A-6 - 4This should only be adding the additional wire A-6 into port 4.But… whilst I was able to unlock the door from within the app initially when I first got it working, without much delay, now I can’t. When first testing and tapping unlock within the app, it made the building intercom unit beep, and unlock… now nothing. I can call my apartment, but jees it’s slow. I was able to enter the building and when answering the ring app on my phone I was already in the lift and listening to the audio of me entering with a good 15-20 delayMy broadband is fibre, high speed, low latency and the Intercom is on 5GHz Wi-Fi, which isn’t set to go to sleep for any eco reason, so there shouldn’t be much else I can do to ensure this connection is stable and responsive. Honesty I doubt anyone would be still waiting at the intercom once I answer given the delay. Is this known, anyone else in the same boat?