I'm wondering if this is contributing to the issue? I clear my system cache regularly.
Do you fast travel a lot? I find that fast traveling always made my game freeze.
I had 557 saves on Xbox and it never froze up on me.
If it's not that, maybe one of the DLC's are corrupted? If so then re-download them.
Edit- why is this in the morrowind section? xD.
Huh, might be dawnguard bug. (I have one where I can't play dawnguard offline on 360)
You have hearthfire too right? maybe try re-downloading all the DLC? It might fix any bugs.
Yea it will cause problems cause the save has dawnguard and dragonborn stuff so first delete the DLC's then load up the save file (You're gonna lose everything dawnguard-ish except your level) then re-download the dlc's.
Yes, it can be done. However, I have heard differing opinions regarding whether it's actually legal to do so and whether or not it violates Microsoft's terms of service.
As far as the freezing goes, it may decrease if you uninstall and reinstall the game and DLCs. Dragonborn did this to my game too, the first I installed it. The freezing seems to be a very common issue (yes, it is a bug and a very severe one) and it was getting so frequent for me that I finally decided to switch to playing Skyrim on the PC, because the unofficial patches fix a lot of stuff that can cause the game to crash (freeze). I think the game freezing is caused in large part to scripts in the game not functioning correctly and unfortunately there are thousands of malfunctioning scripts in this game and its DLCs.