Hi all,
I believe this may be related to some of the experiences here.
I just spent the last hour and a bit doing some single player take off and landings at Al Minhad to see if I could replicate the huge frame loss that occurs when you have a bit of regular traffic at an airfield. I started each session as a cold start F16 and cold start F18 on ramp. No mods are installed. The only variables changed between each session were airframe (F18 or F16), the quantity of take off and landings and wake turbulence on and off. I tried to keep all take off and landings as uniform as possible to limit and uncontrolled variation.
1st:
I flew a clean F16 in VR with wake turbulence on. There were no other objects or AI in the instance. On instance start I had good FPS with no ASW (Async spacewarp) artifact. I found that after 4 take off and landings (landing runway 09 - takeoff runway 27) I experienced noticeable frame loss and ASW artifact only when my POV was toward the centre of the runway/airfield. On the 5th take off and landing I noticed severe frame loss and ASW artifact (easily frame rates less than 15fps)again only when my POV was toward the center of the runway/airfield.
2nd:
I flew a clean F16 in VR with wake turbulence off. There were no other objects or AI in the instance. On instance start I had good FPS with no ASW (Async spacewarp) artifact. I completed 8 take off and landings (landing runway 09 - take off runway 27). There was no change in frame rate and no inducible ASW artifact.
3rd and 4th:
I repeated the exact same methods using the F18 and experienced the same results respectively.
My specs:
16GB RAM
i9 9900K CPU
GTX 1080
Oculus CV1
DCS install on 1TB m.2 SSD
I think a good portion of the frame loss people are experiencing is due to the turbulence calculations constantly going on in the background sim. As there are more and more turbulence streams enacting on one another the calculations needed to effectively simulate the movement of the air gets overwhelming for the CPU. The same is experienced when large quantities of aircraft fly the same orbit for a few minutes.
Perhaps a 'time slider' for the lifetime of the wake turbulence would be useful?
Hope this helps, Thanks ED for all the hard work :)