much more importantly
why would you use 400 and then speed it up using windows (rhetorical question there is no good answer to this )
when yo could use either 800 at 6/11 or 1600 at 4/11 and have the same feeling
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to answer your question
this would be how you'd match desktop to league after having changed your wps
https://www.mouse-sensitivity.com/?share=02919c117274606c65631d5973941f96
