Is it the nemo file manager? under some circumstances, nemo starts to hog memory and CPU. It has to be killed. It will restart ok when you open the file manager

Is it the nemo file manager? under some circumstances, nemo starts to hog memory and CPU. It has to be killed. It will restart ok when you open the file manager again. Aside that annoyance, all has been working fine. I don't recall exactly but it is a known bug in 15, so I expect it to be fixed in 16.