Well it's happened after i switched to Kotlin . The code completion is very slow , often freezes and while i am typing. Overall the performance really is slow. Also the Canary Version 8 which i am using to work with Compose has more issues, autocomplete does not work at all for many cases and is more slow with showing code completion for compose related code, preview is also really slow. Installing on device is wayyyyy faster than time taken by preview to Show Composable.