Same specs here (Raspberry Pi 2 - 0.8.1 Gridseed (5 chip model) with cgdmaxlzeus). The problems I face are:
- Miner not starting after reboot of the Raspberry PI
- Hashrate not correct (Much to high in some occasions during the day)
Update the Minera code and save settings one time at least, this should fix the autostart on reboot.
For hashrate I'm investigating.
EDIT: If you have latest code and you refresh the browser cache (hold down SHIFT key while click reload on Minera website), hashrate should be correct. Feedbacks please.