As stated above. This happens immediately after clicking Save in the file menu or as it just happens when pressing Ctrl+Z for an undo. My Windows 10/64bit installation and all drivers are fully opdated as of today.
The Windows 10 event system shows the following seemingly related entry indicating a memory leak problem in Photoshop.exe.
Fault bucket 1223712933547518662, type 5 Event Name: RADAR_PRE_LEAK_64 Response: Not available Cab Id: 0