Yeah, this could do with some careful investigation, really, since it hits some people quite hard…

Just for the sake of it, here's the lag test project again, that I made a while back to help demonstrate/test the issue under different events/situations:
http://scratch.mit.edu/projects/10125047/

It's worth reading through the comments to see the different responses of different systems/browsers/Flash-players/etc…

I'm wondering if this particular lag issue has become less of a problem recently…?

I don't see the keyboard lag issue myself on Firefox with a Mac, so I'm not sure. But it seems like others have noticed a change…

It's certainly the case that running a project embedded helps a lot - which suggests some of the issue lies with having the editor there (but hidden), as suggested here. (Though other investigating I've done also suggests Flash itself has/had a large part to play, in terms of failing to deal with input buffers if the work done takes longer than the allotted time between screen-updates.)

Has a new version of Flash resolved (at least to some degree) this issue? Or has something changed in Scratch to help work around it, somehow…?
(Or maybe it's just a case of certain things working more efficiently, so people are not so likely to hit the point where the work between frames becomes longer than the time between frames…? -If that's the case, then my recent 3D framework demo is certainly still going to suffer from the problem, since it's doing *way* more work than can be fitted between the usual frame refresh time…)

Can anyone confirm/deny there's a noticeable difference?

Still happens today on Chrome.

Sonickyle wrote:

Still happens today on Chrome.

Indeed, I even made an accidental duplicate. xD