Usually issues with operations, like scrubbing in a dialog box, are related directly to the video driver. Have you updated to the latest? One caveat, some users have had issues with the VERY latest nVidia and ATI drivers, and have actually had to roll-back those drivers.
Good luck, and let us know how it goes,
Yeah, I've got an ATI card (my last!) and the latest drivers (Catalyst 10.5). These solved stuttering playback, but might have introduced a new issue Guess I'll have to wait until 10.6 to see if there's any joy.
And, it could not have a rat's posterior to do with your issue, but IS the first place that I'd look.
If you have, or have access to the earlier ATI Catalyst drivers, you might want to test. There was a post, not that long ago, where a user (Harm?) listed the Catalyst drivers, that did work. Seems that there were about 2-3 newer ones with issues.
Also, I'd poke around my Catalyst Console (actually, I would poke around my nVidia console, but you get the point.), and just see what setting might have some affect. Just as you mentioned mouse drivers, most higher-end video drivers have tons of settings, and not all of 'em play-nice with all programs. Though I think it's been removed in Win7, Hardware Acceleration could have some really negative effects, as can/could OpenGL. As you know, CS5 is currently above my pay grade, so there could well be other things that might interfere.
Good luck, and please let us know what solves the issue for you,
Till recently I used an ATI HD4870 on a dual monitor setup. I had no problems with any of the recent versions, but for the HD5xxx series there was a serious problem with 10.2, which required a patch update (very unusual for ATI) to be issued within a week. My latest version was 10.5 and had no problems at all. The great thing about ATI is that there is consistency in the driver names/versions, they come out like clockwork and with very few exceptions work as advertised. There have been stories about users reverting to version 9.8 (august last year) to regain stability, but I have never needed that approach.
nVidia could learn a thing or two from ATI, They use different version numbers for different cards, their beta versions are extremely buggy and one always wonders when a new version is available.
If I understand you correctly, you are talking about:
That is indeed a reported bug. There is way to much delay before anything happens and then you are way past where you intended to go. That is not in any way related to the video driver. It also happens on MPE cards.
It will not hurt to file a BR (bug report) again.
Sad that it is a Bug, but is very nice to know. Would assume that it will be fixed soon, as it would be major, at least to most.
Thanks for reporting,
PS - Colin, that might save you a bit of hair...
Thanks for the confirmation; that's exactly where I'm seeing it... at least, on my HP xw6400 workstation (dual Xeons from seemingly eons ago, 6GB RAM, ATI 4670 1GB). Anything that appears as timecode (including in the effects control panel) doesn't suffer the same malady. Additional, dragging the actual effect control sliders/wheels causes no delay.
Interestingly, my Lenovo laptop (Core2Duo P8400 2.26GHz, 4GB RAM, ATI 3650 512MB) does NOT exhibit this behavior, either in the control/effect parameters or timecode scrubbers. This would indeed indicate that it's not a GPU issue, and I'll have to take your word on the drivers--my workstation is using 10.5, but the laptop is running a vendor-customized package that uses 9.7, and can't easily be updated. I'll most certainly file a bug report... it's a touch annoying.