Uneven Sprite Scrolling

Even with a minimal level - one player sprite, simple platform - nothing else at all, I still get very uneven and jerky sprite movement.

Is because I'm on a fairly low-powered laptop, or is this a common problem on more powerful machines too.

I don't have a very new machine, but certainly laptops and older PC's will likely not be as fast, I tested some games on a friends notebook via Firefox, and it was jittery sadly.

Soon enough tech will catch up, some of the games run faster testing on my phone that they do via the browser on my friends laptop!

Which browser are you using and what are your system specs? Have you tried Chrome? Is WebGL enabled?