As confirmed by the Cobra, who is the person who designed these blue label rails, the table in the video and this tournament are stock tables from the Diamond factory. Not hacked by a sub-par mechanic.
Diamond rails for whatever reason seem to be "more" susceptible to environmental factors than Gold Crown rails, and most other tables. This is both the 7' tables with the Diamond Black cushions, and the 9' tables with Artemis cushions.
That's been my experience since the pool bug hit me hard in the early 1990s. Diamonds "in general" bank shorter and quicker than GC's. But close enough where its not a big deal. Even when both are in the exact same room. I think most people will agree to that. However, when it gets more humid, the Diamonds seem to change more than the GC's. I see way more variation in how diamonds' play in different environments than how GC's play. I think if a GC was under water it would not play like the Diamond in this video.
The worst case I saw of this in person was at the Tunica DCC spinoff tournament in around 2012. The balls were coming off the rails even worse than what is shown in the video in this first post. Everyone was complaining, and I'm talking about the legit pros, not bangers like me. One pro after his match even went up to the tournament desk to complain to the diamond mechanic (I forgot his name, I think it was Scott...) The mechanic went out to the table he just played on and checked it out. Of course, there was nothing wrong with the table. I think he did it just to appease the player. I saw this with my own eyes.
All you guys saying Diamonds rails play great must be playing in cherry conditions. I'm actually quite surprised more people don't post videos like this.
I was actually watching a few minutes of a match with Savanah the Road Runner a few days ago, and the rails on a few shots were bouncing insanely fast. I was thinking to link the shot but it would just have been met with garbage like "she's a kid, doesn't know how to play, she hit the ball wrong, etc."