Of hangups, freezing and working mouse

I have these issues on an updated, standalone OSMC

When clicking for a media, on some addons, it keeps on working , sometimes for minutes, sometimes it stops, sometimes until the program hangs and freeze. Have to switch off my RaspberryPI 2 B from the power supply. On my other Chinese RK3188 MalI400 android box, I reset from my air mouse. Is there a command on my air mouse keyboard to stop an addon from working, if it takes too long or freezes ?

Also, all the airmouse/keyboard features, work on the chinese box, ( Kodi installed on Android 4.4.2) not so on the decicated OSMC on my Raspberry pi. No problems on my Orange pi Plus.

When prompted with the search box, the mouse icon freezes, but I can select the onscreen characters by a blue shading on the selected character. This happens only on OSMC standalone on Rasp.

On Openelec, the mouse was sluggish when browsing inside an addon.