I have this problem in unreal engine 4. The lightning build times, they are way too long for my liking, I know it's important but it takes so long that it crashes the engine, and I want to know is there any way to fix it or at least reduce the build time. Also, the environment I have is very large and it has a lot of architecture/buildings (city) basically.

PC Setup:
Windows 10 Desktop
GPU: RTX 2070 Super (8GB VRAM)
CPU: AMD RYZEN 3700x
RAM: 16 GB