Trying to recall an old pre-1960s short story. Some sort of interstellar criminal or villain crashlands into a seemingly endless forest on a remote planet. Blasting a path through the forest with his disintegrator, he finds a house in a clearing inhabited by a man and a woman. Moving on, he finds what appears to be the same clearing, house, and couple - but the couple have a completely different temperament. This repeats until the protagonist goes mad. A short postscript reveals that the houses and couples were set up as some sort of isolated experiments.
I was convinced it was by A.E. van Vogt but a look through his bibliography hasn't turned up anything.