[a012]

Zoom in and frame rate drops to under 20fps

[adrian_b]

Probably the GPU and the GPU drivers matter most.

On Linux Chromium browser with an NVIDIA GPU, using the NVIDIA Linux driver, the FPS is pinned to 60 no matter what zooms and rotations are done.

[a012]

I tried on Chromium linux too, but probably driver's issue. My machine has Radeon pro card with just amdgpu driver that's bundled with kernel v5.4.

[codetrotter]

Zoomed in on iPhone X, still getting 60 fps