I suggest you open PowerPoint in safe mode running the following command: Press Win + R, type "powerpnt /safe" in the blank box, press Enter. If it works fine in safe mode, please check the add-ins in your PowerPoint and disable them.
Click File > Options > Add-Ins on the left side of the dialog. Then click the drop-down arrow at the bottom of the dialog box and select "COM Add-Ins" from the list, then click the GO button. What comes up is a list of COM-Add Ins that are loaded and running.
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