Hi Jessica,
Please open the Elevated Terminal/Terminal first.
Use these commands to disable Connected expriences for Office apps and you should see the memory usage going down immidiately afterwards.
defaults write com.microsoft.office DiagnosticDataTypePreference ZeroDiagnosticData
defaults write com.microsoft.office ConnectedOfficeExperiencesPreference -boolean false
defaults write com.microsoft.office OfficeExperiencesAnalyzingContentPreference -boolean false
defaults write com.microsoft.office OfficeExperiencesDownloadingContentPreference -boolean false
defaults write com.microsoft.office SendAllTelemetryEnabled -boolean false
Answer courtesy https://forums.macrumors.com/threads/microsoft-word-web-content-high-cpu-usage.2477641/
I hope this information helps. If you have any more questions, don't hesitate to reach out.
Otherwise, please take a moment to rate the answer. Wishing you good luck!
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