Raspberry pi zero image running slow on some but not others

jonnykesh

@simonandrewwil Are you setting them up individually or are you using a "master" image and just copying that for each installation?
Have you compared a "good" one with a "slow" one side by side? Perhaps it is just user experience and expectation?

simonandrewwil

@jonnykesh. I am just using a master image. I expected that there would be no difference between them. I will check out both config files. Thanks.

jonnykesh

@simonandrewwil Also, when you say "20% slower" can you clarify. Do you mean frame-rate, audio, input lag...? That could mean a lot of things.

simonandrewwil

@simonandrewwil And yes i have compared side by side on the same game, big difference.

Hex

Have you heard of Silicon Lottery? Search it.

simonandrewwil

@jonnykesh Fame rate is fine, audio and graphics are slower the game I am trying is GBA advance wars as my bench mark. The game just crawls.

jonnykesh

@simonandrewwil So it's not just SNES then? Have you enabled any sort of over-clock on the Zeroes? As Hex says above, not all PIs are created equal.

simonandrewwil

@jonnykesh I did once try to overclock it using the raspberry pi menu and i said 'this raspberry pi canot be overclocked'

simonandrewwil

@jonnykesh no, its most noticeable with the SNES and GBA emus.

jonnykesh

@simonandrewwil So, no then. Worth remembering in some older systems the European versions would run 20% slower due to the difference in the 50/60 Hz electricity system. Try going into the settings on a "slow" version and setting region to US.

simonandrewwil

@jonnykesh its the same image, the settings should not be different. The advice about the difference in chips sounds like that could be worth looking into. I will have a go at overclocking in the config menu. Some great advice. Thanks guys.

simonandrewwil

@simonandrewwil Silly me. I forgot to mention I am using a mixture of pi zeros and Pi zero w's. Guess What? The pi zero W's are the ones running slower. I have just figured this out. Doh! Why is this? Is it due to to wifi/Bluetooth running in the background? The pi zero image was running a wifi dongle with no big processor hit.