Shut down all non-essential processes and applications and see if that helps.

Even the most modern and high-powered of laptops will start to experience glitches and crashes once their operation limits are pushed.

Gaming, streaming Netflix, and web browsing will all take their toll on your computer. If you’re anything like me, your laptop is more than a work machine. Go for Internet Quality as, again, it looks clear on a screen. PowerPoint then finds all video content in your file and offers you the choice to compress them to Presentation Quality, Internet Quality or Low Quality. In File tab, click Info, and then in the Media Size and Performance section, tap Compress Media. Video content can be compressed in a similar way. I suggest you go for ‘Web (150ppi)’ as this will save you a lot of space but will ensure it still looks good on screen. Select the level of compression you want. Just select them and click on the Picture Format tab, then Compress Pictures.

Reducing file sizes within PowerPoint is refreshingly easy.