CS5 blurry interface on Yosemite

Hello!

Help!

I recently installed CS5 onto my mac, running Yosemite, and the interface is not crisp at all...it looks slightly pixelated, instead of clear and crisp.  By interface I mean everything you see on the screen while running Photoshop, AI, or BR.  This also includes any projects that are being worked on (especially text based projects).  I have updated CS5 to the fullest extent that Adobe offers, yet it still persists.

Is there a workaround, or solution of some sort for this?

Many thanks for your insights.  I've searched for a while for a clear answer, but have yet to find one that addresses this problem in it's entirety.