So I got the same freeze problems on the SSD version of F7. I noticed that if you boot via USB there are no problems (i.e. make an ubuntu live USB and it all seems to work fine). Then use Ubuntu and play around with the files on the SSD disk and it all locks up freezes. This led me to believe the problem is the SSD drive that comes with the laptop. I bought a new one and will test it out, hopefully its just the SSD and not the motherboard itself the issue. If that is the case you can fix your problems for about 20-30 euro. I’ll post an update when i’m done.