@SL
If you’ve only just joined you will be best to give the connection 10 days to settle.
Is your issues with Wi-Fi or Ethernet? If it’s the former you can split the signals which could improve things for you.
Have a nosy at the section Split your Wi-Fi bands
https://help.nowtv.com/article/improve-broadband-speed
FYI that I do not work for NOW, just a NOW customer trying to help