I did a search on this and did see you wrote about something like this before as have others, however, it seems that my issue is slightly different in that it only slows down and starts sort of flashing occasionally and as soon as I reboot normally, it stops. Until the next time. I don’t want to do anything extensive until I get an idea of what might be the problem.
The phone has been dropped before but I’m not necessarily sure that’s the issue though I know it can cause something like this to happen.
Thanks so much for your help and time in advance. I’ve gotten a lot of help from your articles in the past.