I am suggesting @Kodular
These tips may become solution in future
1.Kodular needs to build its own block editor instead of “Blockly editor”
2.Kodular needs to build a software for PC like Android Studio (Kodular Creator/Kodular Studio). With Inbuilt emulator for testing. So there will be no performance issues with browser. (Saves projects in PC/Cloud). Compile app in PC itself.
3.Kodular needs to build a platform like Stadia (by Google)
Stadia is a gaming platform where Stadia performs all gaming activity on Stadia servers (without users hardware) and streams to user in browser. But this method is only useful if user has high speed network connection.