No need to develop a new browser, you can easily configure yours to disable GPU ...

		modeless on March 9, 2022 \| parent \| context \| favorite \| on: WebGPU – All of the cores, none of the canvas No need to develop a new browser, you can easily configure yours to disable GPU rendering. If you like things to be slow and inefficient. Personally I'm never buying any display under 1440p 120 Hz again and I prefer to run workloads where they're efficient, so I'll continue to use GPUs for graphics.