I also have same issue. It broke after I change to default launcher then able to recover normal after device reset factory mode. Then again break again after install some apps. Need to check n reinstall app one by one later to see which the culprit.

Mouse used the measy air mouse. The q5 didnt detect the dongle after startup.

Software installed:
Youtube
Viki
You peliculas
1 malaysia tv

Also does anyone know how to add the apps to my favorite?