The Don's Craptastic World A meta-level binary dude embedded to a multimedia proxy world!


How to fix the video lag in Firefox!

firefoxLately my video (HD) playbacks in YouTube seemed to be lagging a LOT! I wondered why. I thought it would be me and my years old OS or perhaps even somehow my pc.

But no it wasn't. The lag was caused by Firefox's session saving feature. A simple and fast change in it and "poof" went the lag.

  • Open Firefox and type in "about:config" (without the ") in the Address Bar and hit Enter.
  • Type in "session" in the "Filter" line at the top of the list.
  • Find “browser.sessionstore.interval” and double click it. The 10000 milliseconds (equals 10 seconds) is the interval in which Firefox keeps saving your session in case of a crash; same amount of time between video lags.
  • Change it to something different. 120000 equals 2 minutes, 300000 equals 5 minutes or something else you desire. I went with 600000 (10 minutes), because I don’t particularly care about session saving.
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Posted by Don Salva

Comments (29) Trackbacks (0)
  1. Wow, that worked! However, I noticed that whenever I move my mouse, i also get a small lag. Do you have any idea how to fix that?

  2. Thank you for feedback

    It will be helpful.

  3. Jupp sure fix the issue . Thanks awsome.

  4. I tried this but it didn’t work. The video will freeze every few seconds, but the audio continues to play. I changed it to 300000 and it will happen about every 4 – 5 seconds.

  5. Awesomeness!! That worked. Now if you could just tell me how to fix it for Chrome, I’ll be straight….We’ll I guess it did fix it for Chrome too. Double-Shot!!!

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