Playing Core Crossing, question about difficulty settings and turn speed

Hi, i'm playing this game recently, i noticed that the difficulty can be changed but I don't know if there is an "intended" difficulty? I read that the developer lowered it in an update.

Anyway the real question is...why it seems i can't act before enemies? In the steam community they said to raise my FLO with equipment to outspeed the enemies but it seems it's impossible even if buy the best equipment.

Thanks in advance.