Slow SPI - erichelgeson/BlueSCSI GitHub Wiki

BlueSCSI will try to communicate with your SD card at full and half speed SPI before giving up.

If your card is communicating at 25MHz it has about a 5% performance hit (not much, but worth investigating!)

Try the following to resolve:

• Check for bridges on your SD card holder
• Update to the latest firmware
• Do a full overwrite format with SD Formatter
• Clean the SD Card contacts with IPA and let fully dry, a bad connection can sometimes cause this.
• Try a different SD card, some SD cards may not be able to communicate at full SPI.