Witcher 3 Issue

At random times, my game freezes, and will not respond to anything. Also I am not able to open up task manager to kill the process, therefore having to restart my pc everytime. I know it's a common probably according to reddit, and I've tried some things that people said that would help. No luck for me. I've tried:

• Changing compatibility mode to Windows 7/8
• Getting rid of the GPU overclock
• Swtiching from bordeless windowed to fullscreen
• Changing some settings in the nvidea control panel for Witcher 3

Do any of you guys had the same problem? If so how do you fix it, cause it's getting extremely annoying at this point.