Another issue with grid induced voltage drops is that they often come back up with a bang. Same as after an outage. I often unplug everything of value during an outage to avoid the potential surge when things restart.

Probably depends a lot on your area but I'm told it's a common risk.

Low power can also be damaging to some electrical components just the same as increased power. A lot of variables to consider so I'll leave it at that. I'm no expert in any case.

With great power comes Awesome irresponsibility.