Hello again Jon. If you're pegging your CPU meter, you need a newer CPU. If you see the meter going beyond about 65%,
you're going to have playback problems. You can experience audio cracking at values below 50%. You can freeze your
completed tracks and bypass effects. If that doesn't help, then I'm afraid there really isn't any other fix or workaround for this.
As I mentioned before, you can upgrade your current desktop. You can use any ivy bridge i5/motherboard combo you want.
Just make sure the socket numbers match. You will also need a cpu cooling fan that fits with your socket number, some
silver paste to seat the fan onto the cpu, and the ddr3 ram you're going for. As you are in the UK, a grounding strap might
not be a bad idea. All this is doable for $300-$400 USD, or less than GBP260.
Another option, for about the same amount of money, would be a complete kit. You can look around Newegg and TigerDirect
or vendors in the UK or Europe to see what might be available. If you can read a manual, you can absolutely do this assembly
without any problem. You can re-use your other peripherals, your current hard drives, and load your copy of W7.
Either way, it would take you about a day or two at the most. Just a final note; Home Premium has, I think, a 16gb ram limit,
so any ram you install beyond that would be unavailable. Windows 8 will be released before year's end, so don't bother
to upgrade your OS before then. If you need any help or a second opinion on components, just post or pm.