In order for you to play Neverwinter Nights: Enhanced Edition on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 18.04 or equivalent
Processor (CPU):
Intel Core i3 3rd gen or equivalent
Memory (RAM):
4 GB RAM
Graphics Card:
OpenGL 3.3 compatible with 2 GB of VRAM
Storage:
12 GB available space