Try to reset your device, i.e. switch off and on the small switch at the back. That resolves your problem for a while.

What I've done is (when I got my second remote after the first one was stolen from my house) uploading a previous version of the firmware namely 2.0.b078 that one is far more stable and faster. I don't know the difference between the newest firmware and this one, and I didn't find any differences.

Best regards,

De Pampi