Thank you for responding as usual! Although I decided to just add more "breaking" via the registry and keep the speed close to where it is. However done so in the registry which is actual DPI, VS the slider. Across 3x43"4K displays I need 26,00DPI(interpolated via reg hacks). Pointer at 5 proved most accurate even in Photoshop and Auocad. The Thumball is only on 1000DPI because higher would set the multiplier in the registry too high making it simply so fast it was uncontrollable. 3 things are being adjusted here. The device hardware, the windows GUI slider and the registry. I have it working fine now though. I went from 28,000DPI TO 26,000DPI and increased the breaking from 5 to 7. The acceleration is also set which allows for more precise movement at slower thumb movement. Now I have the balance of precision and speed that I am happy with. I feel the precision of the Elecom G-Pro the way I have it setup is at least equal to that of a G502. The benefit is no pain. Some say it will injure your thumb but I use it in a manner where that is absolutely not true. I do not bend my thumb and use the tip. I keep my thumb elongated and use the side of it. To me it is much better than the likes of a Slimblade or L-trac. Those feel clumsy to me. This is far more precise. This is endgame for me. An Eneloop Pro battery on the LO setting as it is should last about 3 year before I need to take an hour to recharge it! Try that, Logitech.