Thanks for the feedback! @Eric Romanenghi
1. yes, currently indexing is taking a initial cold start time but it same as Intellij IDEA which is ~2mins, and after the initial opening next opening will be indexed in less than 12 secs due to incremental indexing which will be seen in next release.
2. Go to implemention not showing anonymous objects along with implement classes is fixed and will be seen in next release.
3. there are few more tweaks i will do for codeActions to be better. ( for both add imports and implement methods ).