Pi Model or other hardware: (A+ 512mb.)
Power Supply used: (5v, 3A)
RetroPie Version Used (retropie 4.4):
Built From: (Pre made SD Image on RetroPie website,)
USB Devices connected: usb hub
Controller used: ps2 for pc(only the usb out)
Error messages received:none
Emulator: (don't know)

@herb_fargus I know this is an old post, but thanks for posting this hefty tidbit on emulator speed vs accuracy. It was very educational and an enjoyable read.