Quake is playing well under dosbox, on my Freeplay GBA it is also speed, but tiny display 240x320. On OGA my experience off the display was not so good concerning 3D games (apart Doom). If you use a hdmi display, speed should be good also with an RPI3. Or a waveshare game hat, that has also an hdmi display interface. And on PC from about 2,5 Ghz no question even with high resolution.