Is the Firefox disk cache particularly slow on your computer? Mozilla is developing a new feature called "Racing Cache With Network" (RCWN). Based on feedback

Is the Firefox disk cache particularly slow on your computer? Mozilla is developing a new feature called "Racing Cache With Network" (RCWN). Based on feedback from Facebook and user telemetry, it was discovered that the disk cache was very slow for some users, especially with non-SSD hard disks. With RCWN, if the disk cache doesn't return a cached result quickly enough, Firefox will issue a network request and just return whichever content returns first. Firefox will still check the cache first, but can avoid the extreme outlier cases. https://bugzilla.mozilla.org/show_bug.cgi?id=RCWN https://bugzilla.mozilla.org/show_bug.cgi?id=RCWN