Strange Crash Behaviour - Late 2016 MacBook Pro
Solution 1:
Can you tell if the Finder is crashing? By holding down mouse on the Finder icon on the Dock. It will show Relaunch Finder if it is crashing. If it is or not, the next thing I would do is boot into Recovery mode and run Disk Utility and repair the hard drive by using First Aid. Reboot normally. If this does fix the problem, you can boot into Recovery again and Install macOS. This will re-install the macOS. It will not affect data. It may reset the Dock settings and some System settings as well.