Problems with my Halo 4

Just want to say THANK YOU 343 for the weapon update!

BUT

My halo 4 has been suffering for quite some time now. Often my loadout resets, and i get the multiplayer intro, but my friends NEVER get this. Now these days it has trouble connecting to the halo 4 servers and even recognising that i even have all the dlcs, when i do.

Is this a hard drive error? should i reinstall the game/redownload the second disc or something…because something is seriously messing up here to still have these launch problems 8 months later.

?

don’t know. try redowloading DLC