And, as you have posted to the Premiere Pro Forum, I will Move your post to the PrElements Forum.
[Moved to Premiere Elements Forum]
Do you currently have Premiere Elements 11 on Windows 8 64 bit or are you just thinking about purchasing the program?
I have Premiere Elements 11 on Windows 7 and 8 64 bit, and the program works fine for my SD and HD video editing/exporting needs.
There should be a new version of Premiere Elements 11 released soon, so please factor that into any Premiere Elements purchasing plans.
Please do not hesitate to ask if you have any questions about your Premiere Elements 11 Windows 8 64 bit workflows, but be sure to include, along with an issue description, the details
properties of source media
and description of computer resources
The answers will be in the details.