I have 2 computers facing problems with Opera v 34 freezing in Windows 10 latest build.
#1. New ASUS laptop, i5-5200u cpu, 6 Gb ram, Intel HD 5500 graphics, Windows 10 latest build (clean install).
#2. 4 years old ACER desktop, i3-2100 cpu, 6 Gb ram, AMD Radeon HD 6570 graphics, Windows 10 latest build (upgrade install).
Two different computers with different specs and different install of Windows 10.
I don't think it's the computers specifications that is the reason why Opera is freezing, but most likely something with the programming/codes in Opera and/or Windows 10 that will not work together.
In my case I did not have problem with Opera browser freezing when I was running Windows 10 build 10240. The problem started after upgrade to Windows 10 build 10586.