Another issue is some player who stream World of Tanks play the game in a window and not in full screen mode so they can monitor the stream and have other streaming related apps open on the same monitor. Sometimes the window size they sue for World of Tanks is a non standard resolution if they resize WOT to take up a certain space on the screen.
I found a fix for this issue that takes only a few minutes and can be done by using notepad.
Step 1:Open file explorer and go to:
C:\Users\**Your User Name**\AppData\Roaming\Wargaming.net\WorldOfTanks
Step 2:Open preferences.xml with Notepad
Step 3:Search for FOV
Step 4:Find the FOV setting that's under your WoT Player Name
Step 5:Change FOV to 135
Step 6:Save file as preferences.xml
Notes:You can use another setting other than a FOV of 135, especially if you play in windowed mode. However a FOV of 127-135 seems to look correct and have minimal to no distortion.
If you change other graphics settings, you may need to close the game and edit the preferences.xml file again. Sometimes World of Tanks overwrites the FOV setting when you change graphics settings.
Screenshots:Below are screenshots where the replay was paused and the only setting that was changed was the FOV setting. The link to the full size image is below each image.