I have always had an issue when zoomed in, that when I fired my gun my frame-rate would drop to 1 - 2 fps. This has always bothered me, and I'm sure impacted my accuracy in game. Well, I did some searching on the WoT forums and found a simple change that did away with this completely and helps my frame rate tremendously.
If you have this problem, do the following:
Go to your WoT Folder/res/Particles/Tank folder and rename everything beginning with "shot" in the filename to "_shot" (to clarify, just add an underscore to the filename when renaming it.)
These particle files won't be invoked in game and I have noticed a huge improvement since doing it.
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