i don't know much about about mibox, dfif models... can't comment much.
but i do seem to read a lot of mibox users having problems with kodi, be it quasar or other addons.
u probably want to go to the mibox thread and check with other users.
also, check yr memory/storage status.
a 1/8 or 2/8gb device, if u hv too many apps, much junk in there, u may hv only 1-2gb left.
when u try to do a 3gb file on quasar, obviously u will grind to a halt.
i have only 1 (one) addon on kodi - quasar, the only one i now use.
quasar 0.9.78 has been very stable for 2-3 months now.
kodi 17.5 is good, esp now that it allows more androids ac3/eac3 pass thru.
and i notice there is improvement for android hardware acceleration - less/no judders at the beginning of the stream.
i had been watching 1gb, 4gb,15gb streams since last week!

i have kodi as well, but my kodi seems to not download any addons, like it kept on giving me failed to install a dependency, what happened?