ME3 crash at Earth

Here's how it goes for my part.

When I head for Earth as part of the final part of my extended long time game, things happen. That hasn't happened before in the game. It just does so at Earth.

First off, there's the awesome cutscene with all your ships coming in through the Sol Relay. It looks awesome, it's cool, I get shivers over seeing the Destiny Ascension there. Then, with Joker stating the fleets reporting, he doesn't get to saying "asari fleets reporting" before the game freezes all the same. It stays that way for about a minute, then the game crashes.

I found I could bypass the cutscene altogether and I was glad that part was over. It wasn't. The following that happened was that the game started deteriorate the further along I played. I just took down the Reaper AA gun then it was going REAL bad. The graphics rapidly went down to low, the sound was going away to the point there wasn't any and when I was on the shuttle that picked up Shepard and the selected squadmates, the entire cutscene was made in silence and eventually when it was time to switch over, the game crashes.

My simple question is this and I pardon in advance for my language: What the **bleep** is going on?

I have repaired. I have made extra space. I have tried running the game as an administrator. The problems are STILL there. I'm getting desperate for answers here.