For the people who asked: basically what I did to fix my xbox one shitty graphical glitchbugfreeze was a complete uninstall and a very clean re-install. That DOES NOT work the same way as for the xbox 360, although, the same principle can be applied. I suggest a complete uninstall and a fresh install plus all patches and whatever DLCs you choose to have, at once. Then fire the thing up, load your saves and see what's happened.
The process for the xbox one is very long, arduous and tedious, but it works. Several key points to keep in mind (some also for 360s):
1. Xbox Live now saves in the Xbox Cloud. Which practically means that local saves aren't needed and sometimes can become a liability. So, before an uninstall, log in your account, and MAKE SURE you sync your saves with the Dragon Age Server, so it saves all your saves in the cloud.
2. Afterwards, depending on which console you have, either go to your storage and remove all saves manually, delete them from within the game or, if on xbone, from the "manage game" go all to the right where it says game data and clear all game data. Alternatively you can go to system -> storage and clear all local data from there.
3. Xbone has this thing about keeping some installation files on memory/drive, much like it sometimes happens on PCs, so it is suggested that you should go to system->storage->persistent memory and clear persistent memory. It allegedly removes conflicting files and so forth. Doesn't hurt.
4. Uninstall absolutely everything DA:I related, reboot the console. I hard-started it actually, lol.
5. Check to see if you've got all console updates, which you probably do, but just in case.
6. Reinstall. If you simply can't do it from the servers, and you have to do it from the disk, so be it, but it'd be better to let them install from their servers. Newer files all around. It takes triple the time, but it's more solid. Let all DLCs install and ALL PATCHES install, this is important. The newest patch if applied before the BE saves alot of issues, for example.
7. Once it finishes reinstalling, it'll start syncing your DA:I data with the cloud, that's what gets you your saves back, so let it. If it pops up an error, restart the console and let it sync again, till it's fully synced.
I hope all those help some people or at least give some people an idea or two about what to do, cause, if I judge by my experience, good effing luck trying to get tech support to support you.