All I know is that the patch will be released soon, no ETA yet, but they will release a patch soon to fix these bugs. By the way, you're not the only one with the buggy game.. a lot of us are experiencing the same problem or something similar. I just wish everyone would at least calm down and give it a rest until these guys can iron out the majority of the bugs.
I'm worried that the patch will only address the quest/script/companion loopholes everyone has described. The problems you'd run into even if your game was running perfectly, with no performance/game-play/game-engine issues. The issues I want patched, the serious performance/game-play/game-engine problems tons of people are dealing with. I have yet to even hear a Bethesda/Obsidian employee of forum moderator admin these issues exist. They only talk about the quest bugs, the script glitches, taking a companion in the casino. Things they can block off from happening, they are not talking about the performance/game-play/game-engine issues at all, and I doubt they will ever be addressed, just like with Fallout 3:GOTY.