Download Lan Driver For Msi Motherboard

So I just upgraded my PC's Motherboard, RAM, and Processor. I picked up a MSI H87-G43 MB, an Intel i5 processor, and 8GB of 1600 DDR3 RAM. My HD is a Western Digital Black 1TB and my video card is a Nvidia GTX 560. I'm no computer expert, but I certainly know enough to solve most simple issues and build my own PC's.
Anyway, ever since I installed my new hardware I've been having weird video game lag. I play WoW and Diablo 3. Basically, I log in and sometimes my MS is good, other times it's bad. I can run around and play with no lag at 600MS, then I get a 2 second lag spike, and back to normal. The lag is never constant, and my MS does't really reflect what is really going on. I can have 60 Home and World MS, and I'll be getting 2 second lag spikes every 15 seconds. Then I have 500 World MS and 250 Home MS, and it won't lag for 30 seconds. It's very confusing to me. Also, I have another computer on the same router that is having 0 latency or spike issues with the same games.
So here are the troubleshooting options I've already explored : Modem restart, router bipass, driver updates, network settings, windows firewall disabled, ESET Anti-virus disabled, leatrix latency fix, reinstalling the video games, task manager priority. That is just what I can think of, I've been all over my settings and have been on the internet trouble shooting. One of my buddies told me to try here, so here I am.
The reason I posted in MB forum section is because I think it is an internal PC issue. If my other computer is on the same network and not having issues, then my logic points me to my own rig. I checked my drivers for my Realtek LAN card. The model number is 8111E. My driver versions is 7.072. The date on that driver is 4-10-13. That is the driver that came in the MB driver CD. I also looked up the drivers on the MSI website, and it gave me the same one to download.
If any can give me any insight on this issue, I will have your babies. Thanks in advance!
UPDATE: I called MSI and they confirmed I have the latest drivers for the MOBO. He says the LAN is not set up for gaming, but that is shouldn't have an issue. Also, he thinks it is a WoW/D3 problem since my only noticeable issues are in game. I also forgot to mention that I did a complete reinstall of WoW last night, my download speed was over 4MB the entire time and it downloaded seamlessly.
UPDATE 2 - March 12th - 2:14 EST : I talked to Blizzard and had an online rep troubleshoot while I was in game. He says my Network card is showing up grey, not green. Which he says means the drivers are out of date or there is a hardware issue. Sent Realtek an email to try and find the latest drivers or known issues. If anyone has any information on a fix, please post.