I can’t be doing with this usenet thing, it drains my computer processing power massively.
It certainly shouldn’t. It’s basically a protocol from the 1980s. If those computers could handle it, yours can. 😛
Is it just extremely fast downloading that is draining your resources? It certainly maxes out the internet connections I’ve tried it on more than other download sources. Try setting a download cap or just using a different program. Are you using SABnzbd?