Out of memory error. You are probably low on disk space
When you see the image of MW pop up after launching the game wait about 3 seconds and hit F11. Timing is different based on CPU speed so you can also just hit F11 over and over when the MW image pops up after launching the game.
Sun shadow caching
Spot shadow caching
Lower the polling rate (reports per second) in the software for your mouse (such as Logtech Gaming Software or Razer Synapse) to a lower value; such as 125 or 250.