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Created attachment 136267 [details] Message log
If I understand your detailed description correctly, there is a problem with incessant sampling and saving the snapshots, there are also many OoME's in the log. If you want to turn the slowness detector down a little, please use -J-Dorg.netbeans.core.TimeableEventQueue.quantum=<length of slowness[ms] after which sampling starts> and -J-Dorg.netbeans.core.TimeableEventQueue.report=<length of slowness in ms which is reported> if this is not the case, please add even more detailed description