I saw a game called Xevious on the CPC the other day, it was really smooth, I was impressed. I'm curious about what the average fps of the Spec games were, I'm assuming around 25 with the very optimised ones getting to 50 maybe depending on the graphics. But then some aren't scrolling per pixel and different parts are at different rates I think so it's hard to get a straight answer. But I saw a conversion 'Nothing' on the spec by some Russian guy that really looks close to a modern indie game in performance, though I guess maybe it's 25fps in reality.
So if available, the double buffer would generally be used to avoid 'racing the beam' to stop flicker? That's one thing I'm concerned about on the 48k spec, if it can't do double buffer and there's all that trouble. I'm not sure if it can't at all, I just read that somewhere.
That is the skeleton in the maze game, right, I saw that and it got me thinking about spectrum versus early DOS because I thought it was running good and I was trying to remember how the games on my family 286 as a kid were, like Alley Cat and so on.