I use SSH to work on my Raspberry using the PC as a terminal, and it normally works just fine. But once in a while, the Pi just stops responding. For example, I'll use up-arrow to repeat a command, and nothing happens for 5 to 10 seconds, then the screen responds. Or I'll type a command and the PC screen just sits there for a few seconds, then the command is echoed and executed.
This is just an annoyance as it only happens once every few minutes, but if anyone has some insight to what's happening, I would appreciate it.
It does also happen on the Pi console, but not as often.