Enable turbo mode if you do not know how then follow these steps: go to the Chrome web store Search "Scratch Addons" or this link: https://chrome.google.com/webstore/detail/scratch-addons/fbeffbjdlemaoicjdapfpikkikjoneco add it and if you are on the editor (see inside button) you will have an edit option click it then it will show a "Enable Turbo Mode" click it
NOTES: it took me soo long to write the instructions