So I've got this Huawei router wired to 2 PCs and 1 PS3 which has worked quite much perfectly. Then one day just recently, I tried the Crysis 3 beta on my PS3 and got the warning that I have NAT type 3 connection. I don't know why it has changed to that since I used to have either NAT 2 or 1 before that. I have tried resetting my router, fixing the UpNp, tried DMZ and all that, yet nothing works, it still stays NAT 3, which makes online play a sore. Also it doesn't seem to affect my computer that much, only when I try to play online games on PS3 I get huge lag and all that. So can anyone give me any help on this? How can I get my NAT back to 1-2?
Also, I don't know if this affects much, but I don't usually keep all the machines on at the same time, so that shouldn't be the problem here either. Besides the internet connection used to be perfectly fine even when both the computers and the playstation were on at the same time.