I'm having this issue with Flash CS6 on OSX Mountain Lion. Almost every action in the program causes it to slow down considerably. Things such as selecting/moving anything something on the stage, selecting something in the liberary panel, clicking buttons on any editor panel, and scrubbing the timeline. Even using the Mac's menu bar in Flash is slow. The slowest thing is playback from the timeline editor, it becomes so slow that it often crashes the application:
Even though all of this is happening, every other application is running perfectly fine. Flash isn't taking more RAM or CPU that it usually does (except when it's about to crash), and I've only had this problem after upgrading to Mountian Lion, in Lion everything was fine. SWF file publish and playback have no problems whatsoever. The exact same problems are even effecting Flash CS5.5. I am an Adobe Creative Cloud member and all the other apps that I've tried work perfectly. I've also tried Flash CS6 in Windows on the same machine and that works as it should. This problem also consists on not only my existing .fla projects, but also brand new ones with absolutly nothing in the liberary or stage.
I have an Early 2011 13-inch Macbook Pro with a 2.5 GHz i5 and 8 GB RAM upgrade. I also have the 32-bit version of Flash CS6 and CS5.5, and of course OS 10.8
I have a Bootcamp of Windows, so I can keep working, but rebooting is a big hit on my workflow, so I plan to use my backup of Lion. But before that, I want to try and solve this problem.
Thanks to those who read this! I hope I can solve this problem.
I had a similar experience. It turned out that the problem was a trial version of TextExpander. I turned off TextExpander and removed it from the computer and Flash returned to normal. Flash uses a lot of system resources and so any problematic application will cause Flash to work oddly.
Look at the other applications that you may have running. One of these might be causing the problems with Flash.
I found the app that was causing the problem to be a beta version of Hiss (an app I downloaded right after getting Mountain Lion). I would have never thought that an app like that could slow Flash down that badly.
Thank you very much for your help! Flash is running better than ever now!
Oh my god - THANK YOU! I've spent all night on this having had really slow performance in Flash all day! You peeps are officially in my cool book. Deleted Hiss all my problems went away. I guess thats the price you pay for beta testing!
I am having the same problem on Mountain Lion and I don't have Hiss installed... what else could be the problem?
I'm on MacBook Pro early 2011, 2.3Mhz i7 Quad core with 16 Gb Ram.
I have just upgraded from Snow Leopard to Mountain Lion (clean install) and installed CS6 trial. After working a little bit, Flash became very laggy. If I don't find a solution, I'm considering downgrading to Lion... (don't know if it works there well though)
It could be one or more apps that are running on your computer. Look at the utilities that you might have running all the time when your computer is on. The most likely candidates are those apps that are trial or beta versions.
I have removed MacFuse with NTFS-3G (they come together) and it looks like Flash is working better. But now I am without NTFS support, which is necessary for me! This is quite ridiculous - I wonder who to blame? Anyway - is this issue only with Flash CS6 on Mountain Lion? Will it work Ok lets say on Lion or on Snow Leopard? How about Flash CS5.5?
I don't know anything about MacFuse. I looked it up and it appears to be a dead product that is no longer supported. If you look up a few messages, you'll see that Suhas Yogin, an Adobe employee, states that Flash CS6 is not supported on Mac OS 10.8. This is a pretty standard disclaimer for Adobe since CS6 was developed well before Mac OS 10.8. I, and thousands of other users are able to use Flash CS6 with no difficulty at all on Mac OS 10.8. The MacFuse website suggests looking at the MacFuse google group for information. It's possible that you may find a useful replacement or workaround there.
Yep - I know the MacFuse is dead, but aparently it is the only way to run the free NTFS-3G plugin. All other options are commercial. I am trying now Paragon NTFS For Mac - if it works, I will have to buy it. And it's the same 20$ as I pay for the whole OS! So basically I will just consider going back to Snow Leopard - I know that I will have much less compatibility problems there in general... I will be able to also run Extensions Manager 1.8 (CS3) there, cause it also doesn't work on Mountain Lion (it is a known issue). It's just too much isn't working for me on 10.8 and Adobe
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