XPS 15 9500 Screen Freezing

I've had the laptop for about 9 months now, and no matter what I do, the display keeps freezing. Freezes at random for anywhere from a split second to minutes. Audio still works fine, and it seems like I can control the cursor and make inputs with the mouse and keyboard while the display is frozen.

Support hasn't been of any help either. They're trying to charge me 100 dollars for software support now, after a motherboard replacement and windows reinstallation from their repair center main-in program. This thing costed me quite a bit of money, and I use it for school. It's very frustrating that an almost 2 thousand dollar laptop has such poor support and can't work. Does anyone have any tips???

I've updated everything, tried the "disabled panel self refresh" trick, and even the tip about disabling startup services. Also have done about 5 clean reinstallations of windows. None of which have worked. Please let me know what you guys have to suggest.