I haven't really kept track of how many GB I must throw at it at once before it begins to slow down. When it does slow down, the write throughput feels like around 40MB/sec rather than the normal 110MB/sec it gets from GigE.

"Small" copies for me are 4-5 shows, 1-3GB each. No issues with that scale of copying from LAN.

Larger ones are, say, 10-15 videos, each between one and 5GB or so. Somewhere in there things get bogged down.

Cheers