WebView has a "delayed update" mode where updates are only sent over periodically instead of continuously. This can be configured in the WebView Advanced dialog. Mouse clicks and key presses take you out of "delayed update" mode, but mouse moves do not. This parameter specified how often updates are sent while the mouse is moving when we are in "delayed update" mode. This parameter is in milliseconds. The default value is 0, which means updates are sent immediately while the mouse is moving.
Unsupported Java applet parameters.