Hi, Its been happening for a while now and i assumedd it was hardware related in the past but after upgrading the rig i thoguht id see if it changed but it didnt i can even run stress tests pushing gpu and cpu to the max and still the video plays fine but when i go into another fullscreen application the freezing/stuttering begins, when i go on most if not any website that streams video, Netflix/Twitch are the main culprits when i tab into another appliaction they stutter if not freeze completley but the audio remains fine, i tried to troubleshoot and come up short so thought id try my luck here, Ive tried disabling (Even uninstalling) all plugins and restarted and no joy, created a new profile and used that, no joy, however when i launch firefox in troubleshooting mode from about:support the issue isnt present and i cant figure out what the issue is since it occurs on a new profile with no changes or addons which i thought was the same as launching in troubleshooting mode but there seems to be something different which i hope to find out, streaming outside the browser through apps like netflix works fine when im in another application just not in browser specs are below if it helps: FF Version: 99.0.1 (64-bit) GPU: RTX3090 (Around 80% usage at absoulte maximum in another game for instance so still room it can be around 50% when on low demand applications and stutter still happens) CPU: I7-12700K (Around 50-60% usage in a high demand game so without that its barely even using any effort) RAM: 32GB 4800Mhz (Again under load still half of that left to use) Internet download speed: 1Gbps (Doesnt flucuate from monitering it, hard wired via ethernet) Summery: My profile: Stutters Freezing My profile all addons disabled: Stutters Freezing Brand New profile with nothign changed (And not logged in): Stutters Freezing Launch in troobleshooting mode from about:support: No stutters/freezing (Even when the hardware is being pushed)