I have got the same trouble since few days and i have lots of freezes too that i have never had before the 3.1 patch and the windows 10 upgrade. But i think it's a coincidence cause i have the same trouble with the witcher 3 so i suppose it's a windows 10/ graphic card issue....

I tried different "solutions" i found on web but it isn't fixed at all.

windows10 64 bits
MSI MS 7752
intel core i5 3570 k cpu @3.40 Ghz (4 cpu)
8192 MBram
Geforce GTX 660 Ti
dx12