Well, and I say this with all due respect, the way the your post was written made it difficult for me gauge the tone. @Crazycrab has a point. Try taking a bit more time to punctuate and structure to make posts easier read in the future. (EDIT: Just to be clear, I didn't see the most recent post from you before posting this.)
Back to the point. No, I haven't played Sekiro, so I wouldn't know, but Souls style games tend to have a kind of methodical combat pace, but that can feel slow and trapped. Could why I tend not to like most of them. I prefer more immediate, time based parry and strategy, but that's just me. I'd like to see what video you want to show, but I doubt there's a framerate and/or other kind of technical issue with the game that makes it hard to play, this would be a well documented problem if that were the case.
Is your friend playing on PC or console? Bad software set up or a PC that simply isn't up to snuff might explain the issue he seems to describe. Still, let's see the vid' and if you think it'ss help the point.