Q: Is anyone else noticing some weird video stutter after updating to 10.8.3?

Try restarting in Safe Mode. Hold down the shift key on restart until you see a progress bar. After the restart, restart again like normal. Log in to your account, which will be a bit slower than normal this time. Many files are rebuilt. This may improve performance and clear up the issue.

I would suggest the following…

1. Repair your hard drive permissions in disk utility.

2. Download the OS X 10.8.3 Combo installer from Apple. See the link below.

http://support.apple.com/kb/DL1640

3. See if animations return to normal. Reason why I recommend the Combo update is because it updates all the OS X pertinent files in your Mac and as a result of this, it may fix some underlying issues. This is one of the reasons I always tell fellow Mac users to update their Macs using the Combo update rather than the Mac App Store Software Update version, because the latter tailors the update to your Mac and only downloads the files that need to be updated rather than applying the complete patch regardless of your system. 

Hope this helps!

The Combo was going to be my next suggeston as well. I always use the Combo. I think Safe Boot repairs permnissions?

mgsone wrote:

 

Thank you but that didnt work either :-(

Two additional suggestions...

• Try a PRAM and NVRAM Reset
• Try an SMC Reset

See if those solutions work. Try them one by one.

Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work.

Isolating an issue by using another user account

General information.

Troubleshooting Permission Issues

Step by Step to Fix Your Mac

Please post back if they do so the rest of us can learn.