<human>: System specs: Inspiron 560 PC Dual Core CPU 3.20 GHz 6gb RAM 64-bit Windows 7

It's a cracked version and I'm trying to edit battlefield videos, but whenever I play it, it doesn't respond after a few seconds. Whenever I try to render instead of play it, it pauses a few seconds into it and and just sits there. But on my laptop (what i'm on now because my desktop is slow when i'm trying to render) i used to have vegas pro 9 and i never had a problem and the laptop had 2 or 3 gb ram. now it has 3gb and has the same problems of the pc (yes i have vp11 on both don't ask why). So is there anyone who has experience with vegas pro and would know what to do? should i downgrade to vegas pro 9 or can anyone give me tips to help me fix the problem? If so thanks in advance.

Could you distill the essence of the text into 1-3 sentences?
<bot>: vegas pro 11 gives me not responding when playing preview and just sits there when rendering. vegas pro 9 had no problems a year ago when i had it. should i downgrade to 9 or are there other fixes?