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This issue was reported manually by vv159170. It already has 6 duplicates Build: NetBeans IDE Dev (Build 20170503-77be6a2102ee) VM: Java HotSpot(TM) 64-Bit Server VM, 25.121-b13, Java(TM) SE Runtime Environment, 1.8.0_121-b13 OS: Linux User Comments: vv159170: commented out 3K lines in 5K java file vv159170: undo/redo Ctrl-/ (commneted out lines in file) vv159170: uncomment in java vv159170: regression in comment/uncomment lines? vv159170: comment lines in Java files become recently very slow... vv159170: comment or uncomment again... Maximum slowness yet reported was 64792 ms, average is 40585
Created attachment 164235 [details] nps snapshot