Tried the cgminer-3.12.3-x86_64 today starting with a 3.9.0-ish optimal clock. I'm using the original firmware, since I didn't see any firmware updates and so didn't use the rpi at all. The device gets reset (every hour or so) with an error stating that no valid hash was found for the last 1 minute, and the clock gets decreased by 10, over and over. The final hashrate decreased significantly compared to 3.9.0-hf2.

Am I doing something wrong ?