With WSL, Windows can be a great developer experience. The one thing which I did find lacking, especially when moving around in Vim, is that the maxixmum key repeat rate in the configuration panel is too slow.

I was able to fix that with the following settings in Regedit:

[HKEY_CURRENT_USER\Control Panel\Accessibility\Keyboard Response]
"AutoRepeatDelay"="240" 
"AutoRepeatRate"="12" 
"DelayBeforeAcceptance"="0" 
"Flags"="59" 
"BounceTime"="0"

You have to login and out again for it to take effect.