VileZX, I'm sorry for your frustration. But think about this:
Indeed, the demo is just a demo, so it SHOULD only have the content and stuff that it gives the player, and have the locked stuff removed to ease the workload. The game then runs super smooth on Android and Web port. The demo runs super SMOOTH now.
However, since this type of "optimization" relies on the removal of content to ease the workload, the DEMO and the FULL version are almost like 2 different games now.
Imagine buying the FULL version because DEMO runs super smooth on your Android device, only to find out that your Android phone can only run the DEMO, not the FULL version. You basically just bought the game for nothing. That would be a complete scam. Do you want us to do that?
Currently, the demo not only serves to demonstrate the game as a game but also its capacity to run across all devices.