I'm really liking this game the more I get into it, especially for the VR experience with Vive.
The main issue I'm finding confusing is the variation in FPS performance. So far I'm only playing 'Instant Action' or 'Quick missions' but finding massive difference in FPS.
The first thing I did of course is drop all the graphics setting to minimum, no shadows mirrors etc, but still finding some games run at super smooth 45 - 90 FPS and others a stuttering 20 - 30 FPS.
I'm monitoring my PC performance and can see no difference between background processes/ resources etc when experiencing the extremes of FPS, but the one sure repeatable way to initiate the two is by choosing certain games/locations.
As an example the only instant action available for A10-A in Caracus runs 20 - 30 FPS every time even with lowest settings, but the top choice for the A10-C in Caracus runs 45 - 90 FPS even with high graphics settings. The next scenario down the list for the A10-C (Russia I think) runs at 20 - 30 FPS every time again even with the lowest settings.
I found the similar thing with quick missions. With all settings left alone, and using the same plane throughout, FPS performance seems to depend on where the battle is based on the map.
This is usually evident with the FPS display in the 'Fly Now' hold screen before the game starts. Some say 30 FPS and some say 45 FPS. The latter is almost always a perfectly smooth game.
I'm going to do a bit more digging and find out if its the actual location that makes the big difference or active contents, i.e planes tanks etc.
System: AMD FX4300 3.8GHz, Nvida/PNY GTX1070, 8G RAM