If unusually large forms require significant time to open, you can select an option to open part of the form by setting the Partial Grid Fetch Size display option, and specifying the number of rows and columns to open. When using this display option, use care to set the number of rows and columns to the smallest possible number. Setting this option to higher numbers could affect performance on the form.
The number of rows and columns specified for the Partial Grid Fetch Size option should be as small as possible. If large numbers are used, the form will load more slowly, and operations on the form will take more time.