Rough wooden desk vs smooth glass desk for mousepad stability: Glass usually wins for grip, but not always
On a rough wooden desk, the rubber base of most mousepads doesn’t grip consistently, causing shifting during fast movements that makes aim feel jittery. On smooth glass, the rubber forms a better seal for a more stable feel — unless the glass is cold or dusty, which can make grip worse. For cloth pads with rubber bottoms, the desk surface matters noticeably in games or precision work, but cleaning your desk fixes half the problems.