Beta 1:
I'm not sure what happened with Beta 1, but I saw no speed increase at all. Head shots and auto ceiling worked so I knew it took, but no speed increase. I build my levels multiple times, working with/moving/reworking any problem frame rate areas until they work right, so I though it was because they were already optimized.
A couple of dynamic entities (doors and such) were missing, but replacing them took care of the problem and they were normal after that.
Lighting, and level music get reset and you have to put them back they way you had them. No problem there.
Beta 2:
Beta 2 was different. The first thing I noticed was that FPS now showed 38, and stayed there just about through the entire level. This was a happy surprise which lasted for a few restarts. After a few times however, the FPS once again showed 31/32. I have no idea what's going on there.
Basic level setting still get reset and must be returned to your settings. The ambience seems brighter and I had to set it down further than it was before. That could be a glitch in the matrix, as I've seen that before without any updates.
This level had no enemies, so I added 6 to it and tested again. While there was a small drop in FPS around enemies, it was nothing serious or anything that I had not seen before.
With the FPS still showing 31/32, I see no difference between this and V107 where FPS is concerned, again probably because my levels are already optimized. The headshots is a nice touch.
Best.
Specs: Athlon64 4200 Dual Core, 3GB DDR400, nVidia 8600GT w512