Fenin

Your mileage may vary. My Hind is the most solid helo, pitch yaw hover or otherwise, that I've flown in dcs short of the Ka-50. I'm able to make 4km rocket beaten zones and killing the soft targets within pretty regularly. There in lies the reason and logic behind why you're being told its your controls. Speaking just for myself, she's just not doing what you're describing. By all means, the aircraft is EA and the FM is far from finalized, but can you think of some reason why my experience would differ so heavily from yours? Maybe run a repair? We can even take one of my short youtube videos of me launching a Spiral at a Gepard, I was stable enough to dodge fire and hold the sight on the target. Forgive me for the awful quality, running on rural US internet. Of course, keep in mind that Tacview isn't a perfect representation, the models in tacview are blown up to be more visible, all that stuff.

Funny enough, that base spring is no where near strong enough for a 40cm extension. The stick flops around loosely and can't hold a center. Even the one the guy sells that's much stronger is borderline not strong enough for the gooseneck, and I have to put a slight back stick deadzone. As for the saturation it's Saturation Y for both pitch and roll axis on your stick in your axis config (same place you set curves.) Don't touch Sat X on either, just Y. I suggest putting it down to like 80% saturation and then working your way up or down from there. Understand it will mean that you'll need larger stick throws for stuff like taking off or entering a hover, so it will mess with your muscle memory in the short term.

Perhaps it has something to do with the trimmer bug? Maybe its putting in false information into the AP channels then the player uses the beep trim to fix their attitude without it effecting the AP channel input. I know I've found little issue with the AP Channels, but I don't use beep trimming very often (honestly forget it can a lot of the time ) That should be at least moderately testable on user end. Personally I fly with just roll and pitch on and ignore yaw AP entirely and never really notice any issues with those two. I've used the other channels for cruising and never had much issue with them either, but admittedly I didn't do much more than fly straight across Cyprus.

Posting this as an example of someone with a stick extension. I have a floor mounted Warthog stick with 40cm gooseneck extension. The Hind is as steady, stable, and rock solid as it gets with my setup. Entering into a hover is painless and feels fully controlled. Nothing about the helicopter is twitchy in any way, shape, or form (the weird over trim bug aside.) Well, except maybe me sometimes. I believe the issue is that by using curves at all you are sacrificing fine control at certain throws of your stick, removing a linear response and replacing it with a, well, curved one. I flew normal stick for years up until about two months ago when I got my extension and the sheer fact of the matter is that curves aren't a proper way to do it from my experience. You either learn to fly the helo curveless, accept that there is next to nothing you can do about your tiny stick throw area (and thus lack of fine control) or upgrade. There's no comparison at all, curves are not fixing this issue they're exacerbating it, especially in maneuvers that involve any sort of even moderately wide stick throws. I hate to say it, but someone needs to. The run of the mill desk mounted joystick has many of the same issues with helos that the Xbox controller player has when trying to fly fixed wing. Is it possible to fly the helo and be effective? Certainly. The amount of fine control required and concentration is absolutely heroic compared to a full extension though. Even the lightest bump or smallest movement of your wrist can throw you off your aim. I sort of compare it to writing with a pencil. Desk mounted sticks are like trying to write legible cursive with a pencil that's more eraser than anything else and can no longer be sharpened, while a full stick is well, a full sized new pencil. The only stand out I found was a trick with the Gazelle that I sort of tweaked from VSTerminus' video on it. I tried this with the Mi-8 as well before I got my extension. You may consider desaturating your pitch and roll cyclic axis a small amount (10-20.) In the gaz it makes it much more controllable, while in the Hip it made it feel syrupy (flip side, it made the Huey feel unresponsive taking just a sliver off.) A much smoother, less twitchy experience, maybe. The cost is your maximum stick throw is reeled in, so you can no longer push the cyclic to its limits. Not that most folks need to regularly do that. I tried that with both a CH Fighterstick and my unextended Warthog stick, both of which handled it well and made the already pretty smooth Mi-8 feel even more controllable. I would have continued to experiment with it, but the extension removed the need. Your mileage may vary.

Wanted to add to this, every single one of the UN helipads that I've tested on the Island of Cyprus are wacked out. The Mission editor will not allow helicopters to be placed on the Helipads in any way, placing farp objects too close will despawn the helipad entirely, and if you set the area to an invisible farp and land on it the farp treats you like you're still flying. Very disheartening, though I know no way to fix it short of making each and every single one of the dozens and dozens of UN Helipads into proper tiny helibases. Which seems a bit extreme. Maybe add some height to the invisible farps area so that you could land on the raised pads to rearm/refuel.