I'm trying something different.
As I have an online UPS, I can control the voltage I send to connected devices. Previously I had been sending 230V at 50Hz, I'm seeing what may or may not happen if I change this to 240V at 50Hz. So far the results seem promising but this device has tricked me before. All I can say at the moment is that for the past few hours the CRC errors are far lower than usual. Wierd huh?
That makes little sense. 220,230,240V would be an AC measurement, it should basically have no impact. The adpater converts that AC into DC for the device to use. The important thing should be the DC voltage (im guessing its 9 or 12V DC the adapter produces) and how many amps the PSU is kicking out to the device.
AC voltages should not even enter the equation, abroad the figure you mentioned would only be 110V so overseas if that 230/240V figure has anything to do with performance then the device in the likes of the USA where its 110V it must be really poopy.