WPE perform lower FPS than gtk.

[iDalink]

Test cog and webkit2gtk`s Minibrowser on debian bullseye with I3 4150 CPU.
Both of them display test_fps.html.

cog: 50 - 57FPS.
webkit2gtk Minibrowser: 100 - 107FPS

So, cog has poor performance than webkit2gtk.

PS: Both of them use swrast_dri.
test_fps.html.zip

[septatrix]

WebKit 2.46 replaced Cairo with Skia for rendering. As they noticed some regressions on low performance devices with Skia's GPU renderer they defaulted to the CPU renderer with WPE WebKit 2.46.1 but stayed on the GPU renderer for WebKitGTK (which generally runs on more powerful devices). Maybe that could be the difference in your case. You can try playing around with the WEBKIT_SKIA_ENABLE_CPU_RENDERING variable (but be aware that in 2.46.1 the switch is inverted - see the linked commit - though a fix for that should be included with the next release).