Started two new characters tonight. The first one met Rolof inside the keep. When the Imperials came through the gate, he just stood there and didn't fight. The Imperials just stood there too. I killed them and started off down the corridor. Rolof never followed me. I thought it was a fluke.
I started a second character. Rolof and the Imperials, again, didn't fight. I killed the Imperials. I waited about 15 seconds and finally Rolof began his scripted procedure. All was fine until we reached the gate where the rocks come down behind you. I looked back, but the rocks didn't fall. Then in a split second the rocks were at the bottom, but without any kind of transition. They didn't fall; they just "appeared" at the bottom. I had saved just before this and I reloaded without TESVAL. This time, the rock animations played properly.
Though I was getting better fps with this, I'm worried now that it's throwing the scripts off somehow. If these little issues occured because of TESVAL, what bigger issues might have been in store?
Of course I could be wrong and again it might have been a fluke (twice), but if someone else could start a new character and test the opening sequence, we might have confirmation.
I have had this problem
WITHOUT using this mod actualy I found its more due to the fact that because your starting a new character you wanna skip through some parts of the tutorial type section and you do things faster and the AI can't keep up with you, I havnt used this mod yet so can tell you 100% this happens even without the mod.
The potion vendor at least does this just as her standard sales pitch to sell you something, whether or not you actually are sick, so I wouldn't worry about her. The other townsfolk might be a different matter.
When was the last time your character slept in a bed ? This tends to happen to me if I forget to sleep and they ask if Im ok, Easiest way to find out would be A) sleep or

look if you have the sleep bonus on active effects.
Also try using the blessing at a shrine to cure all diseases

)