Ahhh thanks to this comment i pinned down the issue! All the Tracks with these weid decimal BPMs are FLAC files! For most of them i have the option to download the mp3 version from the shop but dont really want to.
I cant understand that my 2000 € (at least here in germany) Equipment and software is unable to analyse the tracks whilst Traktor (100 € in sale) and FL Studio (99 € for basic version) do this with ease.
Heck just for the fun of it i used the BPM detection of god ol winamp and it was on point.
So the issue is somewhat solved but really have my doubts if im willing to accept this. 2000 €…