Loading one of my maps in 4.14 crashes editor and crashes the display driver

This may be a hardware issue that we aren’t aware of. Are you able to switch cards or test on a different machine to see if it crashes?

I plan to test on our end to repro the issue. Can you narrow down the number of element in your test so that we have a reliable test case?

This is going to be hard to test for given that I don’t know what your level contains. Ideally try to find a way to reproduce this issue in a blank scene/project. At this point there are a lot of things that could influence the outcome in your project.