Regarding prey, the game as per usual for the PC scene is broken, screen space reflection settings isn't working properly, in order for it to properly turn on the setting, upon game launch:
- turn off SSP
- hit apply
- turn it back on to full resolution
- hit apply
And when it is properly turned on, you will encounter bad artifacting everywhere pretty much:
Developers on reddit have even confirmed that there is a problem with it:
Have you tried turning off SSR and restarting to see if that resolves it? We're working on a fix for SSR, but in the meantime turning it off has helped people resolve the issue.
As for missing shadows, personally I am seeing a few areas where shadows are missing on my 290 too (using the latest AMD drivers).
Unfortunately this seems to be quite common now with regards to broke/missing graphical effects on release i.e. batman AK, deus ex mankind divided etc.
Essentially, as per usual, PC gamers have to wait for a good 4+ months until they have the game running as it should have been on day 1....
EDIT:
I am definitely missing character shadows.
And I took a screenie of that helicopter area too:
Hard to say how it compares since the one above is zoomed in and not from the same angle.