Here are a few thing you can do to speed up Word
1. Click on Page Layout tab and then open Paragraph Settings and then under "Spacing" change "After" to 0 and then "Line Spacing" to Single and then click "Set As Default", select "All documents based on the Normal.dotm template?" and click OK.
3. File>Options>General>Under Start up options uncheck "Open e-mail attachments and other uneditable files in reading view" and "Show the start screen when this application starts".
4. Go to Proofing and uncheck "Ignore words in UPPERCASE" and "Ignore words that contain numbers". Then change Writing Style: to Grammar & Style and then click Settings and change "Spaces required between sentences" to "2"
5. Disable animation. Go to File>Options>Advanced>Under Display check "Disable hardware graphics acceleration" and uncheck "Update document content while dragging" and "Use subpixel positioning to smooth fonts on screen"
6. Disable Add-Ins. Go to File>Options>Add-Ins> Select COM Add-Ins then hit Go
Disabled unnecessary Add-Ins.
Below is a recommended list of add-ins to disable, depending on preference you can disable more.
Acrobat PDFMaker Office COM Addin - Convert to PDF
Cch.Pfx.OfficeAddin.Core.Word - Pfx Document
DYMO LabelWriter Add-In - disable
OneNote Notes about Word Documents - disable
Pfx.KnowledgeCoach.WordAddin - disable
Pfx.Ribbon.WordAddIn - Engagement
PPC OBPA - PPC
PPC Word Menu - PPC
PPC SecurityDsrWord -PPC
PPCword12 - PPC
PPCWord12Repurpose - PPC
7. Simplify saving. File>Options>Save>check "Don't show the backstage when opening or saving files"