I have a quite large source file - 3MB size. Aftre the source is indexed, in Xcode 9 beta 1 and 2 the source is fine and fast to edit code. But after Beta 3 update and beta 4, eveny time I edit even one line, the CPU usage is jumped to 100% and freeze, takes a long while to come back. I have to go back to Beta 2.
Does anyone have this issue?