Jeffy
Before you get too buried in technical details, I think you should try simpler things. Here is a practical experience report:
I have the following system: DokuWiki on a Stick on a Win7 computer. I edit this DokuWiki very extensively (not infrequently several hours per day) with a smartphone within my local network. Without problems over a long period of time (>2 years).
Then about 2 weeks ago strange problems. Response times unusually long. Even worse: individual edits were lost completely or partially(!) or had to be restored from the automatically saved draft.
My first attempt: restarting the Apache server. No change
Second: Restart of the Win7 machine: No change.
Then I turned off all devices that are somehow involved or at least could be involved. (PC, DLS router, WLAN router, smartphone).
After I restarted all devices one by one (in the right order - DSL router, WLAN router, PC, smartphone - and with enough time until each device was fully operational again on its own) the problem was gone.
- Michael Sy.