Excuse my bad English,
I shared 1080p and BDRemux videos over my gigabit lan without problems (I have 2 NAS sharing), but I use Twonky Server vers. 7 for the DLNA (I don't use the Dlink DLNA, is not good for me), my players are Western Digital TV Live. Also, I have full bluray films onto the DNS-320 (Raid-1) at the same, no playing problems.
Best regards,
Paredux