Void Fissure Survival missions in Gas City tileset doesn't spawn enough enemies

[muziqaz]

I keep wasting time in Gas City Void Fissure Survival missions. There are too few normal enemies, let alone those which drop void reactants. Last one was Meso lvl25-30. I've done 15 minutes, first 5 minutes I just managed to get 10th reactant in last 5 seconds, the rest of 10 minutes I was short by 1 reactant and short by 6 reactants. 

Edited April 19, 2019 by muziqaz