Ensime is not maintained anymore, I'd say the experience has been better with Metals for at least 2 or 3 versions now than it every was with Ensime. Give Metal

Ensime is not maintained anymore, I'd say the experience has been better with Metals for at least 2 or 3 versions now than it every was with Ensime. Give Metals a try! Following the instructions in the docs is enough to get a good working environment.