Most people who are successfully editing AVCHD video are using quad core computers with 4 gigs of RAM -- so you may still be quite a bit too underpowered to work with video from this camcorer, Svenston. Also, you don't say which operating system you're using but, if you're using the 64-bit version of Windows 7, there are a number of known problems with the operating system's drivers which may or may not get worked out as the OS evolves. And, of course, the version of Premiere Elements you're using can make a difference.
However, it is still very important that your Premiere Elements project preset match the camcorder and format of your incoming video. And don't forget to render regularly (pressing the Enter key) so that the red line above your clips on your timeline turns green.
Switching to a Mac can resolve some of these issues. Final Cut uses a proxy codec for editing AVCHD so that process runs very smoothly. However, you pay for it on the back end because Final Cut can take forever to render your final video for output.
Meantime, if you're really unhappy with the product, I urge you to contact Adobe by clicking on the Contact button at the very top of this web page.
I feel like I have wasted many hours and (for me) quite a bit of money on a program that doesn't work...
Keep a careful watch on dates. You only have thirty days, from date of purchase, to return PRE for a full refund.
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