Both Computers had i7 Processors though different versions.
Both Computers used Wow-64.
Both Computers used DirectX 11 for display.
Both Computers would get on average, 30 fps outside of a raid, and much lower when in a raid.
Both Computers would run on Good Settings to High Settings (with lowering of certain things) and still only get 30 fps average.
Both Computers were updated numerous times for various Windows Updates.
Both Computers were updated for graphics card drivers.
Both Computers "supposedly" met the "minimum requirements" listed for using World of Warcraft.
Both Computers had the Cache, WTF, Interface folders deleted multiple times, in an effort to fix this issue.
Both Computers were constantly patched to run the latest World of Warcraft versions.
However, despite this, both computers have encountered the same exact issue. However, the issue is a random issue with absolutely no identifiable pattern, and not repeatable when desired, it merely occurs randomly and occasionally but yet semi-often.
So, on to the problem. Occasionally when logging into World of Warcraft, and choosing a character, and then attempting to log into the realm with the character (multiple realms and characters have had this same exact problem being in multiple different places in the world at various times), sometimes the character model will fail to load immediately, actually it will fail to load at all, WoW-64 will display itself as getting a whopping 1000 fps even though I know my system currently as well as my previous system are entirely incapable of any such performance as that. Both systems were lucky if I could squeeze out 40 fps, and even that was rare. IF I attempt to Alt-Tab out and close the Window all that occurs is a solid Black Screen. Alt-F4 has absolutely no effect at all if staying within the game window. The only way of exiting the game is to use Ctrl-Alt-Del open the Task Manager and then Kill the World of Warcraft Game that way. Sometimes, issues occur and the only solution is merely do a hard reboot forcing everything to restart. That is certainly not ideal but if Task Manager does not respond, then that is the only way to solve the issue. One system had decent amount of RAM (16 GB of RAM), my current system has a small amount of RAM (only 8GB). Under all cases until now, I did not really pay attention to anything listed in Task Manager, merely would kill WoW and then restart the game and it would usually run as expected. Today, however, I took a look at the details listed in the Task Manager when the issue occurred.
The Task Manager stated that it was running at 97% Memory Utilization (on a system with 8 GB RAM). It stated that WoW was using 4.919 GB of RAM and climbing the longer I left it open. I switched over to the performance tab, and it listed as the Commit as using 15 GB out of a maximum 16 GB it allocated for Commits. Only 8% of the processor was being utilized at any given time by all processes combined. WoW itself was about 2% on average. The network was barely operating at all, using less than 1% of available bandwidth.
I realize that my bandwidth is on the rather so slow side. I have now and previously a 50Mbps connection to the ISP and a current 144 Mbps connection to the router, though previously it was 1 Gbps connection to the router on my other system.
Running Windows under normal circumstances it is listed as utilizing ~3 GB of RAM on my current system which has 8 GB available. Windows normally uses 0-2% of the CPU for Usage.
The 97% RAM and 1000 fps with characters failing to load in the world, happens randomly. Over the past 5 days I have logged into the game possibly around 20 different times or so (I did not keep track of actual number). I only experienced this issue 2 times over the past 5 days of numerous logins. I experienced it 1 time the other day, and then again just now. When it does occur, the mouse may move, however pretty much nothing else will respond at all. Therefore, if I try to run the game for some weeks or perhaps months with absolutely no addons to attempt to recreate the issue, I would be unable to view the frame rate and subsequently immediately identify that I have encountered the same issue yet again since the frame rate requires WoW responding and allowing me to view the tooltip on the computer icon (which it will not when the issue does occur). Numerous Windows and Graphics Card updates have occurred to ensure the latest patches and driver updates are used, WoW updates from 5.4.0 to the 5.4.2 latest version have occurred (I do not remember if I had this issue prior to 5.4.0 or not). Yet, it still persists. Occasionally, Randomly, yet often enough to be quite annoying.
I no longer have the other computer with the i7 16 GB RAM. I am stuck using this i7 with a mere 8GB of RAM. It really sucks, but it is what I am forced to do. I would like this problem resolved, however, I am unable to think of anything else I can attempt. Especially since it occurred on two different systems that had some similarities but many differences.