Word is slow for big documents; gets stuck if comments are used

I have Sequoia 15.6.1 (24G90); word Version 16.103.4 (25120717) personal subscription. Documents longer than 10 pages run very very slow; documents with comments get stuck, you cannot navigate the document, it just returns on its own to some comment.

I hope I wil not be sent to tal with Microsoft since this is a 'word problem', it is a Mac problem since the app it is offered on your computers. Please can these basic problems be fixed? If you are an author working with 300 pages you must buy Microsoft and sell your Mac? I tried to open my 278 book in word, I have been waiting for 15 minutes; when the magic happened and it opened the comment 'situation' prohibits me to work (no, the document is not corrupt or anything; I transferred it twice in a clean document; on a microsoft computer it works).

Any solutions?

Thanks in advance