It’s not an hardware/third party software issue, it’s because how the UE4 editor works.
Use a monitoring tool like RivaTunerStatistic or any other software which can show your VRAM usage. Now create a landscape and start sculpting it. The data will fill the VRAM instead of the RAM and the VRAM won’t be cleared until you save your level.
If you don’t save before your VRAM is full, it will simply crash without any warning, even if you have 32GB of RAM and 90% of it free.
Drivers have nothing to do with that. The protection for VRAM overload is simply not coded and VRAM is used by the editor to store data that don’t need to get fast access for the GPU