Maybe a bug; maybe not.
Not a great pilot, but I have learned a reasonable amount about the UH-1H and flying it in this campaign.
I get to missions 7 and 8. Gunship. Tracking on the dialogue in 7 about how to take off due to being overloaded along with the lore behind that mechanic.
Where things depart from what I would expect:
1) Sometimes -- the first try on m7 and sometimes a retry on a m7/m8, the ship lifts fairly reasonably like flying the slicks, just slightly heavier, without me having to do anything special. Just ease up the collective, don't have to red line, gain a few ft immediately and ease into some lateral motion for a fairly gradual but normal lift.
2) Other times, usually after a retry (since I can get gun happy until a tree embraces me as its best friend), the ship maneuvers like a sack of wet <profanity> when I attempt to lift. I get the 'barely light on the skids' even with red-lining, try to follow the procedure outlined in the m7 dialogue, and usually get nowhere. When I do get lift, it's almost like a script just stopped running that was keeping me down and suddenly I'm up with relative ease. At first, I told myself this only happened because I finally figured out the wind component (does 'into the wind' mean fly upwind/windward or downwind/leeward?? -- flashback of some hilarious jumper errors with the MC-6 on this ambiguity of language); but on a retry, sometimes I have luck with the opposite direction or completely different angles -- again, it feels like a switch flicked off and suddenly I'm up.
If it weren't such a drastically different experience between suddenly hard and suddenly not hard on different tries, I wouldn't be considering the possibility of a bug; but as I'm getting such radically different experiences, I thought it might be worth a mention.
Is there an 'artificial' script or other mechanism in the mission file that is supposed to reduce the power/lift of the gunship engines? If so, it might be applying its effects inconsistently.
Technical:
VR - Usually with Oculus Quest 2, using openxr and oculus software during this encounter.
Decent PC specs (rtx 3090/amd 5900x) , but this map really churns fps in VR down heavily -- I probably average 45 fps, but with the different motion smoothing techniques used by either openVR or steamVR.