Please do not make those trying to help go through extra steps to look at your question.
How to attach a screenshot or file in this forum.

No one can answer your question without knowing much more about your system and the document(s) involved.

• Generally, increasing RAM is the least expensive upgrade for speeding up performance.
• In Word, consistent use of Styles for formatting can greatly speed up performance for longer documents. See Importance of Styles in Word.