Most VALORANT professional players use the mouse polling rate between 250Hz and 500Hz. So, 250Hz or 500Hz is considered the best polling rate for VALORANT. As a first-person shooter title, some milliseconds delay can cause you to miss the shot. However, it totally depends on the computer specs and setup. Although, a higher rate is considered the best, but the too much high can also cause lags in the computer. Experimenting with your own setup is recommended, and finding the best one for yourself.