I looked at the latest plugin and it said:
"IDEA X version. Improved performance. Fixed make."
I downloaded the latest idea x eap and scala plugin to see if make had been fixed.
On my project it hasn't :(
If I do a make, and then change nothing and just do another make straight after, the make takes about 10 seconds (this is with FSC on). Doing a make followed by a make with fsc turned off takes about 40 seconds!
Is there anything I can do to help fix this?