This issue was reported manually by alexvsimon.
It already has 2 duplicates
Build: NetBeans IDE Dev (Build 20150427-9594f7084608)
VM: Java HotSpot(TM) Client VM, 24.75-b04, Java(TM) SE Runtime Environment, 1.7.0_75-b13
alexvsimon: invoke code completion
Maximum slowness yet reported was 26543 ms, average is 15442
Created attachment 153400 [details]
Fixed in jet-main.
Integrated into 'main-silver', will be available in build *201504290001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Dusan Balek <email@example.com>
Log: Issue #252102: org.netbeans.modules.editor.completion.LazyListModel.initialize: LowPerformance - fixed.