That bad news is that I think you may have a problem if you lose focus when watching the same people fucking for 20 minutes because you will have a really hard time with anything made in the last 1p to 15 years as the number of male talent is significantly lower now than previous times and therefore the same guy is often seen fucking the same girl and since most porn producers now use a sort of checklist than ultimately location and lighting are about the only things that differentiate their brand of porn from other producer.

The good news is If you prefer shorter porn videos then I recommend you look for content made in the 90's and early 2000 when they tended to be much shorter than their modern counterpart and they had access to significantly larger pool of talent so you could get a lot of variety in pairing.

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