When you post a video, post the link to its own line. In this style …
*Blank Space *
Full address including the http
Blank Space
But also, unless the bug that has been discussed in the thread linked below has been fixed, you have to post quickly, for reasons explained in that thread. See in particular its posts #150 and #159.
I don’t notice fast-talking to be a problem so much, as the sound mix on some streaming shows we watch, where the spoken voices don’t stand out well enough from the various ambient background noises and soundtrack music. Not sure if it’s the production values of the show itself, or needing to fine-tune the settings on our soundbar (don’t think it’s my hearing, which seems to be holding up well so far).
What happens all the time is, I’ll turn it up to what is a perfectly good volume during the talking parts. Then it switches to an action scene and the sound of gunfire, explosions, etc. is wall-rattlingly loud. I have to either constantly keep my finger on the volume control, or adjust for action sounds and put the closed captioning on to catch the quiet dialogue.
I have the same issues, no soundbar. It is only shows made in the last 20 years or so. If I watch older stuff, never an issue. So modern sound engineers doing (imho) crappy mixes.
Note that there are two separate issues with fast talking.
One is when the viewer has trouble keeping up: the talking is too fast for some viewers to understand and absorb everything that is being said.
If I understand correctly, this is not what the OP is complaining about. Rather, the OP’s objection is that characters talk faster than he thinks is realistic.
Personally, I’ve never found this to be an issue. I can believe that some people really do think fast and talk quickly and articulately. But I also think this is yet another instance of how art condenses life. Conversations are presented without the meaningless introductory chitchat that real people often engage in before they get down to business. People don’t (as another poster has already observed) spend time on goodbyes when ending a phone conversation. Dialogue tends to be snappier and pithier than in real life. People don’t hem and haw and “um…” while speaking, unless there’s some artistic reason for us to see them doing so. We aren’t shown all the time it takes people to get from one location to another. If we see people eating meals at all, they spend more time talking than ingesting food. And on and on.
And I appreciate things like these. I don’t want to see all the slow, boring details of the characters’ lives. And I don’t want to wait around while they figure out what they have to say.
Getting off-topic here, there are some widely circulated versions of old films with really crappy audio. One example is Brando’s One-Eyed Jacks. I’d read about a new version with restored audio and video, but it’s still not the one being shown by broadcasters in my area. Another is Welles’s Chimes at Midnight (Falstaff). The audio for both is truly atrocious.
Remember those worn-out VHS copies you’d sometimes get from rental places in the 1990s? It’s like they’re still using one of those.
Ah, yes, I suppose I did miss the OP’s point a bit then.
Comedies often do this, where characters are firing off witty comments at far too fast a pace to be realistic, to the point where the members of the 1920s Algonquin round table would have seemed dull and slow-witted by comparison. One show like this that comes to mind is Letterkenny, where the characters would constantly trade off punny rapid-fire riffs on a certain topic. It’s entertaining but not at all realistic. I often thought when I watched the show, nobody is that clever. Especially when drinking as much as they do all the time 
Ooh that’s been my beef with quite a few TV dramas: I think they’ve set up the sound ambience for more sophisticated equipment than my TV speakers - but when I’ve managed to connect up my Bluetooth stereo headphones, they separated out the different sound streams and it was all much clearer.
More recently I found a soundbar that claims to use hearing aid technology to accentuate speech, and that seems to improve things enormously - though at the cost of suppressing the music.
I have no problems with movies omitting things like goodbyes and mishearing and other boring details. It’s not supposed to be like real life. I think the problem is that I simply don’t buy that the character actually came up with the dialogue themselves. It’s both that they figure things out lightning fast, down to the tiniest details, but also that I don’t buy their emotional journey.
There are ways to convey they they have been thinking or have been talking, without actually spending any more screen time.
This is extremely key to this issue. I usually always turn on closed captions when I watch a new to me show from the UK. Sometimes regional accents take a while to seep into my brain. Currently, we’re watching Whitstable Pearl and enjoying it. The police detective character, McGuire, sometimes talks fast, but he mumbles like crazy. We’re always going back to reply what he said even with captions!