Quality degredation when viewing Powerpoint documents?

Hello,
I'm the IT admin at a medical college. (I run the whole place via my MBP with Fusion and RDC.) The vast majority of the teaching materials are in the form of MS Powerpoint presentations. I keep hearing from our Mac users that when they open the documents with Keynote, the image quality is degraded.
If this is a known issue, is there a fix other than switching to Powerpoint? Granted, Keynote is much better, and that's not fanboy talk since I can't say the same about Pages or Numbers , but most of the students aren't creating presentations, they are just viewing and adding notes to existing MS documents. Due to the subject matter, image quality is very important.
Any thoughts?
Thanks,
-Travis

Thanks for responding Lori - yeah, for whatever reason the image quality isn't quite as crisp when we use the PDF Printer. If that's the way the system is designed then I guess we'll have to do it that way and sacrifice some image quality, printing notes is more important, would be nice if we could print speaker notes via PDFMaker though.

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Here is a simplistic view that I feel may help you understand reality.
The only time you're looking at your image pixels in Photoshop is when you're zoomed in to 100%,   There your look at the actual image pixels Photoshop has for your image at your displays resolution.
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High resolution Display have now add a new wrinkle.   User interfaces were designed for displays with resolutions around 100 PPI elements like text, icon, and other things like checkboxes, buttons etc. were created so there size would be useable are this more or less fixed 100 PPI resolution.   While Photoshop was designed to scale your images so you can work well on it is was not designed with a scalable UI. Photoshop can not scale its user interface independently from its image display display window for you displays high resolution. Photoshop's Image display area has the same resolution as the rest of Photoshop User Interface. Just like there is only one resolution in all layers in a document. CC 2014 2xUI changes that. PS UI is scaled to 1/2 resolution the image Area is at the displays actual resolution.
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Windows can scale you display to many resolution and as several presets. like 100%, 125%, 150% and like Adobe 200% half resolution.    You can make a Windows Registry and add an External Photoshop Manifest file the tell's Microsoft Windows to handle display scaling. I have a Microsoft Surface Pro 3 m windows machine. Its LCD has a 216PPI resolution. Windows 8.1 had 4 preset for scaling its LCD.
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using Windows 4 scaling presets and captured the 2160x1140 scaled screens Only at the 100% preset does the image window have a 216ppi Also note @ 2x UI Photoshop UI doe not fit on screen
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Quality degredation when viewing Powerpoint documents?

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