If the only what you have are static images then it does not matter is it HTML or anything else - it will be rendered fast enough as images are on GPU side already.<p>For the note, here are two HTML layers and one DirectX layer rendering on the same DXGI surface: <a href="https://sciter.com/sciter-and-directx/" rel="nofollow">https://sciter.com/sciter-and-directx/</a><p>In tests it showed 400 fps or so ...<p>I mean that HTML rendering is in principle not different from rendering by any other means. You just need to know how particular browser in that particular version does that and optimize for that...