AVCHD Videos Stuttering and slow..HELP!!

Hi guys,

I'm trying to edit footage taken from a lumix camera shot in AVCHD.

I upgraded my CPU to i7 3770K to handle the beating of the decoding, but still very slow.

This AVCHD files are tough to decode. Stuttering and cracking as it plays back.

Is there a way I can convert it to a faster format for accurate editing?

This one's a guitar track and I need the fingers to sync so its quite an intricate job.

Any advice and help appreciated!

Thanks,

Mark