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That seems like a throttling issue to me. Would be very simple for an ISP to throttle based on known usenet server IPs even if you have SSL enabled. I don't understand with my setup how SAB inside a windows VM can be 2-3x faster than the Mac version! I tried through a different network and mine is s...

mtakacs wrote:I'm also experiencing a mysterious slowdown with my SABNZBD downloads.

Can you try NZBVortex (there's a free trial) and see if you also get better speeds while using exactly the same servers and connections?

I'll give that a try, will bring MacBook to my GF's place and see what happens

You did install the specific Mountain Lion version? No explanation. It's not a wide spread phenomenon, otherwise it would be reported more. SABnzbd runs much faster on much less capable hardware. Can you check the CPU usage with Activity Monitor? Yep using the ML version from the DMG. CPU usage is ...

Version: 0.7.4 OS: OS X Mountain Lion 10.8.2 Install-type: .app Skin (if applicable): Plush Firewall Software: None Are you using IPV6? no Is the issue reproducible? yes Hardware: Mac Mini 2011 i7 quad core, 8GB RAM Really weird issue here. Using SABnzbd I get average download speeds of 500-650KB/s....

I just tried switching to non-SSL connections and I'm now getting around ~1MB/s speeds compared to 500KB/s with SSL. The SSL overhead must be pretty taxing on embedded CPUs.

A mini would be perfect but I can't really justify the cost, especially leaving it running constantly. I think I'll stick to the Asus for now and just deal with the slowness. I might try NZBget too in case a native program is faster. I assume Python has some overheads.

Not sure I'd say it runs "well" but it does work. That raspberry thing looks interesting too

I have an Asus RT-N16 (480mhz CPU, 128MB RAM) running the TomatoUSB firmware and SABnzbd, along with SickBeard, actually runs pretty well. It's definitely slower downloading than on my Mac (~1MBps max vs 1.6MBps) and par2 checks are obviously quite slow, however it's definitely usable and I can shut...