There will always be "insufficient memory" when playing across the line of fire. Why?

Because the computer is outofmemory, there will always be a "out of memory" pop-up window when playing through the line of fire.

The solution is as follows:

First, open the computer desktop, right-click the icon of this computer, and then select Properties from the pop-up menu.

2. In the pop-up dialog box, click Advanced System Settings on the left.

3. Click the Advanced tab above, and then click Settings.

4. Click the Advanced tab on the Performance Options page.

5. Click the Change button below.

6. Check the box before "Automatically manage the page file size of all drives", and then click "OK".