On both 32 and 64 bit versions of my Photoshop CS6 running under Windows, I do not have that problem. It would be interesting to note if both versions in your setup has the same problem.
I could suggest first to right click on that tool in the Options bar and choose "reset tool" That should get it to its' default if anything was unintentionally changed.
The other thought would be to check the Performance settings under Photoshop's Preferences. See what it is like with the GPU unchecked. It might be the drivers in your video card not working well in this new version. I don't know your system specs (OS, hardware,type of graphics card, etc.),so I can't say much there.
That's about all I can think might be causing problems.
Thanks. I will give your suggestions a try. I should say, I'm on Mac.
Ok,I hope you make progress. More than a few here know the Mac OSX system far better than I do,so I'm sure they can contribute some pointers. Just post the model Mac you are using and the version of OSX you are running. It helps to narrow down the usual suspects.
This is not a known issue. Rather, the first time I'm getting to know someone with this issue.
Can you post your System Specs?
A gut feeling that I have is that it's to do with latency in the application itself. Can you select the Marquee tool from Tools panel, wait for 1-2 seconds then try to click & drag on your document? Can you see if this fixes the issue?
You are right, Sudarshan. It is a latency in my system. If I wait a full second, it works fine. This same latency is not found in PSCS5, on the same machine.
Thanks for your help.
Glad it worked!
As far as I've heard and read, Marquee Tool uses OpenGL. A lot has changed between CS5 and CS6. Most importantly, Mercury Graphics Engine. Read more here: http://www.adobe.com/in/products/photoshop/mercury-graphics-engine.html
This leverages full use of your GPU features.
To avoid such latency, one option is to check for a workaround/ figure out if there are any driver updates. Since you're on Mac OS, you'd receive the Graphic Card Updates packaged along with Software Update for Mac OS.
The other option is to update your computer - which I think is not a cause for concern at this point. You could rather save that money by waiting for 1-2 seconds
I'm using a two years old Mac Mini with a puny graphics card and OS X 10.6.8. It is barely adequate for running CS6 according to Adobe's stated reqirements. However, I've never encountered this latency problem with 13.0.1 or 13.0.
Unfortunately, I cannot replicate the situation here as I just bought a new MBP late June this year and its a Core i7, 8GB running 750GB SSD, 1GB Radeon 6770M Graphics and 10.8.1
There must be something unusual about the OP's system for this latency to be occurring because their report of it seems to be the first after CS6 has been in the wild for months.
There seems to be many problems with Mountain Lion, though. I hope she is being a pussy-cat for you.
Luckily, so far, so good. No complaints