I bought it yesterday, played the Beta fine on desktop (see sig). Streamed it to laptop fine and also loaded and played on laptop fine. Exited game for dinner, afterwards laptop would not start it whatsoever, just crashed before getting to splash screen. Desktop still ran it.
SI Games started investigating GeForce experience issues, telling forum users to delete GeForce, then delete nvidia PhysX

. It was apparent that it was highly unlikely that GeForce would cause those issues. It had to be a W10 issue.
Obviously everyone is an expert so clearly it was my fault that my laptop wouldn't run it if my desktop would and I should 'sort my drivers out' but the only difference between my Laptop (MSI GS70 Stealth) and desktop (apart from the obvious) is that the laptop is running W10 Pro w/ insider whilst the desktop is on W10 Home. Both were also running 358.50 drivers.
Unfortunatley I just went through the refund route on Steam, I know it's a Beta but like the last 4 iterations, it is not game ready. It should be a closed Beta and the fact that FM15 had no W10 support leads me to think that FM16 may have been rushed onto the OS.
If they release a hotfix I may re-buy it between now and release date but I have a disappointing feeling that it will be like FM15 and 14 where it isn't polished until next Feb.
Really wanted to get on with a decent save but think I'll just have to wait out for a while now, the hour I did get in did look quite good and felt improved on 15.