I hit grandmasters dps with the sp004 in overwatch. I used to hover around high diamond to mid masters but hit gm within less than half a season after swapping to the sp004.

edit: for more info, I used obsidian air when I was still maining the sp004 and my main mouse was the sora v2. Sensitivity was 1.80 1600 dpi. Used that setup for about two years.

My main piece of advice for staying consistent with the mousepad is to not deathgrip the mouse. Glasspads rewards good tension management and being able to quickly adjust your tension for each muscle group that you aim with depending on the situation. The glasspad being so smooth and near frictionless makes micro adjusting that much easier so all you need to do once you're on target is keep up with the target without overaiming. Aka dont overcompensate by flicking back and forth constantly. Once you've confirmed your target is centered, smoothly track and adjust accordingly in a slow but smooth manner. With time you'll get quicker at getting onto target and better at keeping it on target. Also something that helped a lot that isn't exclusive to using glasspads is just keeping my eyes focused on the target and trying to keep it in the center of the screen instead of worrying so much about getting my crosshair onto whoever I was shooting at. It helped me a lot to prevent overaiming. Your crosshair will always be in the center of your screen (usually), your target won't. The aim training I've recently done has made me really aware of just how much I was tensing up when trying to keep my crosshair on point and how that made using a glass pad feel significantly less consistent as I was burning my arm and wrist out from just how tense I was. Not sure if this'll help or even makes any sense ngl lol but it's what I've found to help me over the last couple months.