Thanks for all the great answers! I guess I was a bit annoyed in the first place since I have a pair of DT Swiss GR1600 setup with Pathfinder Pro, which keep pressure crazy good, so only top off a few times a month.
I went to my LBS and they put some new tape on and made sure that the valve sat fine, so installed everything again now and will see in a week or two how it all holds up 
If its the same loss after a week or two, ill just accept that its as good as it’ll get.
I realised that I forgot to write what tires I used, its a pair of Pirelli Cinturato Gravel H 40mm on a pair of DT Swiss GRC1400.