This bug was originally marked as duplicate of bug 240660, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 8.1 (Build 20151231-debian-8.1)
VM: OpenJDK 64-Bit Server VM, 25.111-b14, OpenJDK Runtime Environment, 1.8.0_111-8u111-b14-2ubuntu0.16.04.2-b14
GUEST: It's taking so long even thou my laptop is decent and has ssd drive as well.
Maximum slowness yet reported was 37052 ms, average is 37052
Created attachment 163422 [details]