This tool tells you exactly how much your latency could improve by changing your mouse's polling rate

We've long been sceptical of 8 kHz polling here at PC Gamer. At least based on how it feels experientially, provided I'm using a good mouse with a solid connection, there feels like very little difference between 8 kHz, 4 kHz, 2 kHz, and heck, even 1 kHz polling. But felt experience, while important, isn't the most objective and accurate measurement. What is a lot more objective is a simple spreadsheet tool (version 0.6) that tech and gaming YouTuber BaldSquid recently cooked up.

It does involve some manual work...