I've been using DPI analyzer to match sensitivities to the 3 different computers (and mice) I have access to (Logitech G700, G602, and Perixx MX-1800B, 2 Windows 10, 1 Windows 7) and it's been working great on the same PC. However, I've noticed it returns different results on Windows 7 vs Windows 10, regardless of what mice is plugged in. I'm getting around 15% lower DPI measured on Windows 7 for each mouse (e.g. 700 DPI vs 800 DPI).
I also measured cm/360 for one mouse in one game (Perixx in PUBG) and got the same values, so it appears that the actual DPI is the same, but the desktop/website receive different values.
One important note is that the Windows Text affects the desktop/website sensitivity on Windows 7, and Windows 10 before the Fall Creators Update. After all this testing it seems like there is a difference between Windows 7 and Windows 10 sensivitiy, and the website is calibrated for Windows 10.
Setup: All PC's have MarkC's mouse acceleration and chrome zoom set to 100% (which does affect the values the site receives). Firefox has the same result as chrome at 100%.
Computer 1: Windows 10, 250% text size
Computer 2: Windows 10, 100% text size
Computer 3: Windows 7, 125% (default, possibly for this resolution) text size
When switching Windows 7 to 100% text size, I then get 870 DPI (matches 1.25 * 700 DPI at 125% text size).
I guess since I verified in-game cm/360, this is more of PSA than anything else as I did some searching and didn't see any information about it.
