Substance Painter Crashes When Exporting at 4k

Whenever I try to export out my material at 4k, the Substance Painter application would just crash/vanish after 10 minutes. When I export at 2k, it does it quite instantly with no problems. This happens only when I'm trying to work on custom tilable textures as well - I've exported out 4k textures for other projects with no problems.

I tried searching for a solution for this but have not had much luck. The most I could find that was related to my issue was from this forum post from the allegorithmic site (https://forum.substance3d.com/index.php?topic=35374.0), but the solution wasn't stated as it seemed like a staff member helped the person outside of the forum.

Any help would be much appreciated. Thank you!