I went from 2600 dpi with ridicilous values ingame + mouse accelaration to 800 dpi and then to 400 which is what I'm using now, browsing on 800 is perfect, you will love it after a few days, I know it's preference, but it's browsing, it's not as important as in games, 400 dpi is a bit too slow, but I got used to it, you have more feel to the weapons with lower sens, much more "aimlock" moments, but don't go too low, find a good enough 800 dpi sens for you, what feels comfy and just try it, you can be much more precise, your limit is where your hands starts to hurt, if you're a wrist aimer go low enough so it stays wrist, don't use arm to aim, that shit hurts if you're new to it, if you have skill in your wrist, use it