[BUG] Scrolling is jittery

[Ravenius]

Hello,

I have an FPS of 59-60 at all times in this example. Still, every 5 seconds or so (especially when moving diagonally in the frame) I experience a small lag with the scrolling.

I have no idea what this could be, since the same happened in my actual game (about 300 lines of events) and happens in this (only 1 event). Any info would be appreciated, thanks!

Ps, I'm using the latest beta build. This also happened in 248.

http://mfa.aquadasoft.com/view/1279379576-test

Edit: there seems to be a problem with the MFA repo. If that link doesn't work, here is the direct link: http://mfa.aquadasoft.com/upload/1279379576-test.mfa

[LB]

My computer is bottom line stuff and even I don't get any jittering with this. I think that individual PCs may be interfering.

[Ravenius]

This happens on both mine and my brothers computer. It also happened to somebody when I gave the link to the actual game in GC. My graphics card is Nvidia 9800GT, if anybody has the same card, please report Thanks.

Also, it's a very minor lag but it makes the game look unsmooth. It might not be so easy to notice, but run around diagonally in the frame for a while and it will become unsmooth.

[James]

Flawless - 9800 GT.

EDIT: Now I see it, but it's very subtle. Not something I would have noticed without you pointing it out.

[RayMarble]

Very jittery on my machine (Windbox DE200 with Windows 7, 2 gb and ATI Radeon HD 4350).

[Ravenius]

Really? I have no idea what is causing this then Jamie also gave me some other scrolling methods, but it still skipped a few pixels every 5 seconds or so.

[LB]

I made an application with only 2 backdrop obejcts and the Surface object, set its height and max framerate to 100, and added a 60 fps mark (one of the backdrops) for reference. For me this application when idle runs 90fps. The reason I made this is because I think there could possibly be background interference, and indeed if I set a window to open at a certian time, completely unrelated to this app, the framerate drops a bit while it opens.

See what you get: Framerate Plotter

here is mine:

[Looki]

Ah, the standard MMF jittering. Available in pretty much any scrolling game. Don't deny it. Completely gone in HWA.

[N64Mario]

lol pretty interesting frame rate plotter. Though would be nice to have an actual counter that actually shows the current FPS instead of that one timeline that always says 60 on the left. But i guess the green line thing probably takes care of that.
I take it you have the mfa to export it with HWA version? Because I tried the exe from this topic and the line is not as strait as the last pic shown.

[LB]

The 60 was for reference to make it easier to count what your framerate was.

http://www.LB-Stuff.com/MMF2/FrameratePlotter.mfa