Issue with Exporting

[Choppy]

Whenever I try to export a video and occasionally when I open up Action!, it crashes/freezes my computer. The only way to reset from this state is by hard resetting using the power button. I have no idea what causes it to happen and would like to fix it ASAP.

PC Specs:

GPU: Radeon R7 250

CPU: AMD Vishera 8 Core

RAM: 16 GB DDR3 RAM

PSU: EVGA 500w

HDD: Toshiba 2TB

[radi]

Check if you are using latest drivers for your video card.

[Choppy]

I just updated it and it still freezes, it also freezes when it's loading up Action and I switch to another tab.