My spec are quite low, but I can run the game with 60FPS. 

The problem doesn't exist before 1.16 update, it runs perfectly fine in the 1.14 and 1.15.

Basically, every time the game opens, it will cause the CPU to load 100% and causing some lags on the menu.

I can't click any button, my character doesn't appear, and the background video is stuttering. Further click will cause the game turned into Not Responding state and force closed itself.

Is there any chance this is caused by the background video or something else ?