I tested the QcK Limited with four different mice with different sensors. I tried the Rival 110 (TrueMove1), Logitech PRO Wireless (HERO), Ninox Venator (PMW3360), and Tt Iris Optical (PMW3325). My tests included various swipes with the MouseTester software, as well as some fast-paced FPS gaming.
SteelSeries Rival 110 - TrueMove1
Logitech PRO Wireless - HERO
Ninox Venator - PMW3360
Tt Iris Optical - PMW3325
The graphs show that there were no malfunctions with any of the sensors mentioned above. They all tracked perfectly on the surface of the QcK Limited, which is great news. Old mice and their old sensors, such as the Logitech MX500 or MX300 with the Avago A2020 sensors, might have issues with the white parts, causing them to malfunction there. Most modern sensors won't have issues with white spots, however.