Issues

Main issue: 

Scale of the environment – too large. 

Solutions: 

• Scale it down a little without ruining the design and reduce the amount of buildings.
• Rely a lot on modular assets and utilize Blueprint construction scripts. 
• Utilize UE4’s “3D imposter sprites” (i.e. for very distant objects/structures to reduce drawcalls)
• Stay away from small detail and focus more on larger shapes, silhouettes. 
• Focus on a specific area and keep the rest simple. 
• Do not work on any interiors.

Other potential issues: 

External hard drive / computer failure (as it always tends to happen)

Solution: 

BACKUP