I really love the idea and the modded planet, however, I am encountering problems with maintaining 60 fps due to the large number of enemies which now have appeared in my map. I usually go from 60 fps t o 13 fps

Is it possible to have an option to removed them altogether? or somehow reduce their number?

It's a map generation setting. There you can disable them. Obviously you are not playing the mechanics of this planet right. The idea is to not let the noise pollution get to the enemies so you won't have this problem. Place some (more) walls around your base or use noise cancelling towers.

Possible, but I have plenty of walls and noise cancelling towers; nevertheless I am flooded with enemies all around.

Possibly another mod affected it? Or I just expanded too much and got out of control.

Will try to work it around a bit then thank you

Walls and trees absorb noise. Machines and belts produce noise. Modules change noise as well. Find the right balance. That's the challenge of this mod.