Greetings,
I've a problem with this game ... its kind of weird to explain but, ever since the train crash, every dialogue line overlaps, what i mean is , when a line is about to finish the beginning of the next line will overlap and play out at the same time with the last bit of the previous one, cancelling and substituting the next one in the process as well, it is kind of annoying but i don't know what's causing this.

Same issue here.

I have this only when I uncap the frame rate limit.
But even then, it is the audio only, that overlaps, subs work "normally" (just faster), so probably not the same issue.

Is the framerate capped for you by default? For me the mod / game is running at up to 144fps which is my refresh rate after just installing Fallout London and Buffout4.

uncapped framerate (in order to speed up transition between regions, like when you enter a building and then return back to the world - London) is more about 800-900 fps (but while it should be dedicated for the loading screens, it sometimes triggers in-game, mostly during lock picking, or sometimes when in dialogue - which applies also for RADIO messages or tapes)

But there are mods that leave the uncapped FPS unhinged for loading maps, while everything else should become normal. I was just saving the small girl, who let the distress signal from the roof garden, and it sounded just fine with the extra addons to Buffout 4)

Oddly, this was fine for me until tonight. It just started happening and I have no clue what triggered it. I'm further than the train wreck, I've done a few missions for the Vagabonds.