The "take controls" copilot feature appears to cause serious performance issues when used with the advanced flight model.
This happens in both SP and MP (tested with local dedicated server).
Version tested:
Original output filename: Arma3Retail_DX11
Exe timestamp: 2014/10/23 09:58:12
Current time: 2014/10/23 19:26:37
Type: Public
Branch: Development
Version: 1.35.127913
{F25026}
Have a mission with an empty MH-9 (also tested with a UH-80)
Ensure Advanced Flight Model is active
Get in as copilot
Take controls
Engine on
Release controls
Take controls
The game now runs at a very low framerate and sometimes the helicopter explodes while still on the ground.
Turning the engine off after these steps seems to have a higher chance of exploding the helicopter.
You can also reproduce it by changing the later steps:
Get in as copilot
Take controls
Engine on
Release controls
Get out
Get in as pilot
I was on as pilot, with a co-pilot. Gave him the controls and then later took back the controls. The server had CBA mod loaded, and I also had CBA loaded. I don't think I noticed any problems with frame rate, but he hopped out just after I retook controls.
I Think this might be similar to the issue I am having: http://feedback.arma3.com/view.php?id=21354
I get the same symptoms. Lag and explosion.
Thanks for the feedback and notes. Yes, it's the same issue - caused by switching from SFM (AI) to AFM while starting the engine.