So there are generally several reasons for this situation.

1: There are too many junk files on the computer, and Warcraft has occupied a lot of memory, so it is necessary to clean up the slimming software.

2. Generally, after playing DOTA, Warcraft will automatically save the videos you played, which will greatly affect the running speed of Warcraft over time.

Open Warcraft to find the replay file and empty the video inside.

3: CTRL+ALT+DELETE Opens the Task Manager, and all unavailable processes will be closed. If you don't know what the process is, just check Baidu.