Hey. I always use 400 dpi 500hz. I had rival 600 for 8 months and one day I joined the game and mouse felt so fast. I RMA it, they told me to destroy the mouse.I received new Rival 600 which feels the same. I measured the dpi, and it shows correct values. I always use 400 DPI, now it feels so fast. I dont know if before something was wrong with my mouse and now its working good or something is working bad. Im confused because i cant play normal. I set my settings lower but it still feels fast. I disabled acceleration, I tried reinstall windows from version 1709 to 1909. How Can I check if its working correctly or not. I dont know how I can explain it better for you.