It's no secret that Season 1 and 2 are great and then the show falls off a cliff. John-Rhys Davies has said that Dragonslide is the exact moment the show went off the rails.
John Rhys-Davies frowns upon episodes like this.
“There’s a difference between the Science Fiction audience and the Sword and Sorcery audience,” he says. “We started picking up numbers last year and then we did a show that was a rip-off of the film Dragonslayer where, in fact, Arturo kills Quinn and he is then brought back to life by a woman using magic. Any Science Fiction fan who saw that suddenly thought, ‘Oh, wait a minute. I get it. It’s a kid’s show and not Science Fiction after all.’ So next week, of course, we drop three points and never get those viewers back.”
In fact, ratings after “Dragonslide” dipped under a 6 rating and didn’t recover until 6 episodes later