A few days ago, while in Freeside, Boone lost his fool mind as soon as I left a conversation. This was on the street. I looked around, figuring I was being attacked, and everything slowed down. Boone was switching between his sniper rifle and his machete, crouching, standing, and then, just as someone turned red, he pounced on them and killed them. This whole time, everything was jerky, slowed, normal, slow. I was worried it would crash, and then it did. It locked up.
So, when I reloaded, the first thing I did was go back to the Lucky 38. I told both Boone and ED-E to stay.
I've been playing for at least two days since this, and I have not had a lock up. I get to keep their perks, but I lose their help and their additional weight for hauling stuff.
It is WORTH it. I do not believe that it has been long enough to say that this will be permanent, and for me, locking has been the worst issue I have had, but the worst slow downs have all happened when I had followers AND too many people close by. Having tossed the followers, my system has not slowed down nearly as badly and it has not locked.
If anyone else gives this a try, please let us know how it works out for you.