Zgemma start 2S remote getting slower...


Firmware reports as V 4.2 from 8th Feb... anyhow I have noticed the "OK" button on menus getting slower and slower.
However the channel change is still relatively fast, when using channel + and -.
Remote is outputting nice strong IR signal.

Any ideas? I don't really have any plugins, just use if for FTA satellite, nothing plugged into USB either.