Hi, Stefan

Thank you for the help, but could you please be more specific.
I cannot find those menu in "Help" or any others on "Menu Bar"

Do you mean
"View" > and untick "Large File Controller"?
Maybe I'm wrong.

Please help me further.

Thank you so much

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Edit:

Oh I see you what you mean, it's under the following menu;
"Tools" > "Customize" > "File" tab > then untick "Display Large File Controller when a large file is opened"

Futhermore, I just realize that we can also change the number of the "Minimum File Size" for the "Large File Controller" to open automatically too.

It's in the following menu;
"Tools" > "Customzie" > "Advanced" tab > then change the number of MB you'd like in the "Minimum File Size to Open Asynchronously"

Thank you again, Stefan, for your help !!