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Firefox framerate drop when set firefox use dGPU on modern laptop with high refresh rate screen

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catkingmagnumdemon
catkingmagnumdemon
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Both test on testufo and random website, frame rate drop significantly, feels like soft locked on 60hz when using dGPU.

no video tutorial showcase because non of websites can host 165hz video

Reproduce: Select "High Performance" in Settings>System>Display>Graphics>Firefox>GPU perference Create new profile in about:profiles and restart browser to new profile Browse some website, notice that framerate differents

Additional info: FF 142.0 (64-bit) Windows 10.0.26120 Build 26120 (Windows 11) Hardware accelerate on. layout.frame_rate -1 intel i9 iGPU, nVidia 4060 laptop dGPU

Both test on testufo and random website, frame rate drop significantly, feels like soft locked on 60hz when using dGPU. no video tutorial showcase because non of websites can host 165hz video Reproduce: Select "High Performance" in Settings>System>Display>Graphics>Firefox>GPU perference Create new profile in about:profiles and restart browser to new profile Browse some website, notice that framerate differents Additional info: FF 142.0 (64-bit) Windows 10.0.26120 Build 26120 (Windows 11) Hardware accelerate on. layout.frame_rate -1 intel i9 iGPU, nVidia 4060 laptop dGPU

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