Super serious frame rate drop issue（about city wall）

Farthest Frontier Bug Reporting
1

Yesterday, I used a resource free building in the setup to design the blueprint, but during the design process, I discovered a serious frame rate drop issue

Hardware environment:

GPU-GTX1650

CPU-i5 9300H

Used mods: None

Number of residents in the game: 500

Frame rate before frame drop: 20-25

Frame rate after frame drop: 3-5

Yes, you read it right, it’s 3-5 frames!, The maximum is only 5 frames!

What operation caused frame loss:

Deploy city walls and enclose 4 layers of rectangular walls with a population of 500 residents, totaling nearly 70 * 70 (the normal layout of the four sided plain map requires so many city walls)

            • – --------- - - can fix this? or Optimize it ？
2

What does this mean?

3

emmmmm - - -
It can be considered as not having this sentence