[zxoq]

While that router may be beefy enough for multiple downloads. Installing an open-source firmwire degrades WAN performance a lot. I've tried a few different routers and dd-wrt / tomato generally reduces the WAN speed by 75 - 90% (from 500-1000mbit down to <100) in comparison with the default firmware. That is simply unacceptable, although understandable since this is probably not something that hits the devs very hard since most people are not on 1gbit pipes.

[unwind]

That sounds ... sensational. I've never used any of the open firmwares (so I don't have any deep motive) but I would really really hope that you provide this information to the developers. Preferably as a bug report with some kind of measurement data backing up your description, of course.