Apparently the PS3 version also has frame rate and saving issues but this time its related to once the save file reaches around 5-6 MB in size.
Besides similar graphical glitches like the Xbox 360 version, the PS3 version is reported to have "lag" issues with the frame rates and problems saving.
Bethseda did state they are working on a patch for all versions but don't have an exact release date for it.
http://www.egmnow.com/articles/news/...e-rate-issues/