I make a piano keybord game ,it has abote 100 object in the page . I test it using different version，After v2.6.2 it is very slow。 <img width="578" alt="5" src="https://user-images.githubusercontent.com/12488947/114653947-b027ac80-9d1b-11eb-8269-137d31b1f414.png"> <img width="711" alt="1" src="https://user-images.githubusercontent.com/12488947/114653853-853d5880-9d1b-11eb-9684-5ce3e16c9d1e.png"> <img width="766" alt="2" src="https://user-images.githubusercontent.com/12488947/114653855-88384900-9d1b-11eb-8865-b3768e98ec11.png"> <img width="725" alt="3" src="https://user-images.githubusercontent.com/12488947/114653864-8bcbd000-9d1b-11eb-9733-c448cd84d6f7.png"> <img width="736" alt="4" src="https://user-images.githubusercontent.com/12488947/114653866-8cfcfd00-9d1b-11eb-8f3f-cb4382bf5892.png">
I make a piano keybord game ,it has abote 100 object in the page .
I test it using different version，After v2.6.2 it is very slow。