Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

120Hz not supported?

  • 9 replies
  • 0 have this problem
  • 8 views
  • Last reply by Marcus

more options

Hi there!

I'm curious about what happened to the 120Hz (and above) support? Disabling addons don't seem to change anything, Edge works without a problem on the UFO test etc. but firefox seems completely broken on 105.0.1 (64-bit) for now.

Anybody else with the same experience?

Hi there! I'm curious about what happened to the 120Hz (and above) support? Disabling addons don't seem to change anything, Edge works without a problem on the UFO test etc. but firefox seems completely broken on 105.0.1 (64-bit) for now. Anybody else with the same experience?

All Replies (9)

more options

What is your layout.frame_rate value?

more options

Thanks for the reply, it seems to be -1 which i havent changed manually fyi. Is that the correct value??

more options

For 60Hz it's correct. You have to set 120 for 120Hz.

more options

Just set it to 120 and restarted the browser, still only detects 60Hz. Everything else works in 120 btw, games etc.... It's odd..

more options

Hello Dropa.

My monitor is an Alienware AW3418DW and is set to 120 Hz, Windows, apps and games etc. is set to 120 Hz approprietly, and works without a hitch. Some odd apps don't support above a certain framerate, which i can see on my monitors (built in) on-display framerate counter. However in Firefox my monitor seems to transmit 120 Hz just fine, but Firefox itself seems to report only 60 Hz support when testing - even when set to 120 Hz manually. As far as i know, higher refreshrates should work out of the box since version 103?

I'm mainly using this site to test firefox directly, but other similar sites have the same problem:

https://www.testufo.com/

I have read that it could be related to power management, as some people have solved this problem by opening a game in the background, in order to make Firefox sync at 120 Hz. (which it apparently fails to do for some, when in lower power modes on certain systems). This doesnt seem to work for me either, so im completely lost.

Thank you.

more options

Please enter about:support in the URL bar and check the Target frame rate in the Graphics section.

more options

Ahem, it says 60.... Interesting...

It used to work in 120 Hz, so this is less than optimal..

more options

Is it 60 with changed preference? Switch it back to 120.

more options

It should be 120 but it reports 60, not sure what's causing it... I'm completely clueless..