I am running 1.4.2 on a fresh install, and started completely over in order to avoid bugs with old saves. The only mod I have is the save mod, which I would love to get rid of, but will keep until I know I can play though without major quest bugs.
I have no stuttering during regular quests, and the halberds are gone.
However, I did just do the whole battle in Prybislavits, and it played like crap through the whole thing. It lagged, stuttered, and froze several times. I have done that quest many times. I have never had it play bad like it did today. I removed my mod and replayed it to see, same thing.
Several quests are still bugged, or have issues. For many people “The Sport of Kings” is still bugged. You cannot turn it in if you take the horse back to Zora, it will CTD. I had to ride the horse back out, away from Neuhof, way away, to get it to where I could turn it in. Also, the quest “Clothes Make the Man” will not trigger, no matter what i do. I cannot talk to Capon at all anymore, and he has been in his underwear since the bath house. without that quest triggering, you also never get the “Robber Baron” quest. The majority of people seem to be having this same issue.
Many many people are also having issues with Merhojed villagers being bugged after you cure them. I am about to try that for myself since 1.4.2, so will update when I know. There are also many reports of the Epilogue being bugged. That I also have to wait to see.
While 1.4.2 is the most stable the game has been since launch. There are still issues that need to be addressed.
EDIT: “Clothes make the Man” finally triggered after I got to the main quest “All That Glitters”. I know it use to trigger much earlier, because I use to talk to Radzig about Wolflin when he was at the camp near Merhojed. I would always do the “Robber Baron” quest before even going to investigate Prybislavits.