about:config

javascript.options.jit.chrome / booléen / true
javascript.options.jit.content / booléen / true
content.notify.interval / nombre entier / 500000
content.notify.ontimer / booléen / true
content.switch.threshold / nombre entier /250000
content.interrupt.parsing / booléen / false
browser.selfsupport.url / chaîne / « »

browser.cache.memory.enable -> enable
browser.cache.memory.capacity -> -1
browser.cache.memory.max_entry_size -> -1

browser.cache.use_new_backend -> 1

Activer le pipelining

network.http.pipelining -> true
network.http.pipelining.maxrequests -> 8
network.http.pipelining.ssl -> true
network.http.proxy.pipelining -> true

La vidéo

layers.acceleration.disabled -> false
layers.acceleration.draw-fps -> true
layers.acceleration.force-enabled ->true
gfx.direct2d.force-enabled ->true
gfx.filter.nearest.force-enabled ->true
stagefright.force-enabled ->true
webgl.force-enabled -> true

Prefetch

network.prefetch-next-> true
network.dns.disablePrefetch- > false

En vrac

network.dns.disableIPv6 -> true
browser.safebrowsing.enabled – > false
browser.safebrowsing.malware.enabled -> false
browser.sessionstore.interval -> 300000 (15s par défaut, soit 15000)

media.fragmented-mp4.exposed -> true
media.fragmented-mp4.ffmpeg.enabled -> true
media.mediasource.enabled -> true

privacy.trackingprotection.enabled

https://addons.mozilla.org/fr/firefox/addon/pagesaver/