I cannot find any specific issues reported about that model of Linksys.

I personally use Vuse (Azureus) for torrents, & others here also recommend uTorrent. uTorrent is supposed to be easy to use, & both are recognised at private torrent trackers, unlike LW. We do generally suggest using a specifically designed torrent program for torrents rather than LW.

Perhaps limit the speed settings on each of your LW's. Instead of unlimited, choose a maximum speed. Unfortunately LW has less speed settings now than they used to. This makes it difficult to select high maximum speeds. Most other gnutella programs have multiple speed settings & very easily controllable up/down speeds catering for 'all' speed types including those on extremely fast connections.

Something which 'might' help is removing some of your incomplete files if you have a very large amount. If using LW 4, see Tip: Purge the Downloads Queue! (click on blue link). If using LW 5, just select those incomplete files with zero % downloaded & press cancel. This can only be done one incomplete file at a time from the Download window with LW 5. Cancelling downloads in LW 5 also deletes the incomplete file.