Had to restart my computer multiple times as well due to the crashes from using Opera GX. If I have too many tabs open (like 10 to 13), the browser freezes and then shows a BSOD before crashing. I'm using a Lenovo Yoga 9i (apparently, this laptop is prone to crashing at times). Haven't had any issues with other browsers as much, even Opera was fine two days ago. Idk if its a GPU issue or Opera GX itself, will try reinstalling it.