AMD has a new version of its FidelityFX Super Resolution upscaling: FSR 3.1. The new and improved upscaling algorithm includes temporal stability improvements, which essentially makes for less of that annoying flickering that could be present on details on previous versions.
Flickering has been a bugbear for FSR. Smaller details, most often at a distance from the player view, flicker in and out as the upscaling algorithm tries to figure out which details to preserve when they're only a few pixels wide. It can be worse in motion, but AMD says that both "at rest and in movement" there's "less flickering and/or shimmering and 'fizziness' around objects in motion.
