There are several ways to get around Notepad's limitations. Attempting to open a large file in Notepad can cause unbearably slow load times, lagging, and might even force Notepad to shut down. The truth is, Notepad is simply not designed to handle large files. If you have ever tried to open a large file in Microsoft's Notepad, you know that it can be frustrating to sit by while Notepad takes hours to open up your file. Suppose you have a 600MB text file that you need to edit.