Feelings :
On my new computer : New parts like canopy , label can reduce workload 👍
On my old computer : The more parts, the slower the rendering 😢

On my new computer : How beautiful the new sky and sea are ! 👍
On my old computer : New environment makes game run slower 😢

On my new computer : New airport ! Beautiful yeah yeah yeah 👍
On my old computer : No more things slow the game down plz ! 😢

On my new computer : The best settings can make my game very beautiful 👍
On my old computer : Even lowest settings can't make game runs well 😢

Suggestions :
1.Add a "minimum process" option for low-end devices (I am not kidding)
2.The current optimization work is terrible : On my old computer , when I playing 1.10 with 300 parts plane, I can use "Medium" settings , when I playing 1.11b , Use "Low" settings and 1 parts “plane” still can make my game “POWERPOINT” .

Something else :
1.Sorry for my bad English .
2.@WNP78 Maybe I can help the team to improve there work by testing subsequent versions , I am a good example about low-end devices . I can use a little Unity also .