Ok, so I'm mostly illiterate when it comes to the internal workings and going-ons of a computer as far as hardware and operation are concerned so bare with me.
I bought my latest computer from Best Buy roughly two years ago. I'm sure it's been happening for a while but I'll get huge fps drops during massive AoE or if something in game were to burst onto screen between me and my character. An example of this being the steam/geysers in Borean Tundra. Also, I have noticed as of the last few alts I have leveled that the Ember Clutch(fiery trees and whatnot) area of Howling Fjord plays havoc with my machine and will freeze up for a second of two upon entering of leaving this area. TBH I have dealt with these issues so far, but after seeing some of the graphics improvements, i.e. the major water improvement, I am starting to get worried that these issues will only worsen. My in game video settings are maxed with the exception of shadows, which is completely turned down, and I play in windowed mode if that matters. I think, I can't check because of maintenance that I run at a average of 26fps just running around questing.
I guess what I'm looking for is help on how to fix these issues. Like I said I'm pretty nub when it comes to working on computers, so if you're gonna help please be patient with me.
Thanks in advance.
Edit for specs:
Processor: Intel(R) Core(TM)2 Quad CPU Q6700 @ 2.66GHz 2.67 GHz
Memory (RAM): 6.00GB
System type: 64-bit Operating System