Not sure how to best explain this one, but I just fired up 2.08 for the first time, and I'm getting visual overlays that shouldn't be there. If I look in the direction of a fire, I'll get streaks of flame effects across my screen, or if I equip a water arrow, my screen will get a rippling water effect. There are other similar problems, but I'm sure you get the point.
This happened in the first mission I tried, so I loaded up a mission I had completed with 2.07 without issue last year, and had the same problems this time. My hardware hasn't changed in the last year, so an issue with 2.08 seems likely.