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DCS 2.7.8.16140 Open Beta - cascading oscillations and cumulative bugs resulting in VRS/RBS problems


rogorogo

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Before I type my bug report - a positive note.
The latest patches have introduced an enhanced fidelity if the collective blade pitch is changed either for the airframe reaction and orientation. 
Not only the nose or airframe vector but also the entire tilt and drift change in a very fidelic way.
This is especially noticeable if the  КРЕН and ТАНГАЖ dampener channels of the ВУАП-1 suite system are in use, and the  НАПРАВЛЕНИЕ dampener channel and the высота maintain channel are turned off.

This is a very positive sign and I hope this is a small symbol about the intent to have a fidelity gradient for this module this iconic rotary frame deserves,

Now for the less positive - aka the bug report.

Unfortunately the situation described in this bug report:

and especially in its mysteriously vanished parts have worsened and are now clearly a more systemic issue that is a culmintation of various (in parts acknowledged and already being worked on in insularity) issues that cause cascading issues.

The missing weight (mass) and inertia is leading to more oscillations, especially with a "light" configuration (less fuel, light munitions load) that is itself problematic during a terrain final (hover) on non-flat "terrain" surfaces.

Clearly noticeable is now that the DCS trim settings ("control helper" or "special tab" options) of "default" and central position are NOT reliably working during any instance, even within the same DCS client session.

Further the INGAME settings of "AP trim" (trim button setting) and "manual trim" (fe coolie hat) seem to cause cascading issues in the game code, resulting in more and more offsets to the point that even a full reset result in progressive input necessity and corrections (cyclic stirring).

On top of this the constant exception catcher events of the DCS proprietary settings result in more and more input necessity during a longer flight (no reinit of airframe and or world load).

Another sympton is the drift-gauge suddenly showing random indications, while the player can notice the airframe behaving completely differently. Sometimes this even results in mirror indications of what is going on or the gauge switching from random left/port-right/starboard indications with the airframe having a TVI in an entirely separate third orientation.

On top of all of this there seemingly is a threshold where - again as reported before - VRS seems to suddenly occur like a trigger event (the attentive enough can even see the airframe frameblink before the VRS effect kick in as if an ingame event was triggered). Where before VRS might have been recoverable, it now is an unrecoverable disatrous quicktime event.. even if this even occurs already on the ground or at 1-2 m AGL.

More disturbingly this event can occurr in a stable hover and a sinkrate of -1 or -2 on the VSI (radar alt on) and the Doppler-hover system working.

So apart from the bug state in each part mentioned, there is a cascading interaction on a systemic level.
If the results are caused by this cascading interaction cannot be judged by an enduser and it evenly shows the possibility of an unerlying fundematal source issue causing said interaction or even gradients of the insular bugs in each keylog submodule.
Which could be the clearly hardmodified weight variables, the currently missing physicalized inertia, anything.

That there IS a bug can not only be noticed by the osciallation issues, the VRS states, the inability to trim at a certain point (or the "trimlock bug) but also by clear exception catcher and outlier events.
Example: if these bug in any subset have started occuring.. an RBS effect will result in the airframe rolling at 3-4 times the speed it would normally RBS roll to the right in a comparable, replicable scenario.


Test scenario:

  • Singleplayer and multiplayer with repeatable scenarios in direct comparison to prior bug notice
  • x52 sets magnet modded, spring modded, zero signal stutter, controls cleaned (not double binding of active peripherals)
  • trim setting (DCS proprietary) "central position" including "rudder"
  • ingame settings as described above
  • current workaround of constant "reset" and retrim from zero applied


Dxdiag irrelevant but attached.

Trackfiles:
2x singleplayer, direct comparison to prior scenarios, chosen because of drastic showcase and 8+ repetitions and chosen because of lean trackfile.
https://drive.google.com/file/d/1ojlq_M56d2skyne8_9QmqmFvgFqcHZE2/view?usp=sharing

https://drive.google.com/file/d/1ok5VXQnXas7UBmTQgEIrHr_4wcDA3e91/view?usp=sharing

DxDiag.txt

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  • ED Team

Hi, 

We do not agree on all points you have mentioned so it is best if you break down your report and post one issue per report so we can focus on them individually.

Include short track replays specific to each report. 

6 hours ago, rogorogo said:

Further the INGAME settings of "AP trim" (trim button setting) and "manual trim" (fe coolie hat) seem to cause cascading issues in the game code, resulting in more and more offsets to the point that even a full reset result in progressive input necessity and corrections (cyclic stirring).

Not sure what code you have seen, but there is no cascading issues with trim.

Weight is correct but we will check

VRS is present in the Mi-24 and correct, again we will review

Drift issues have been reported

ground handling will likely be tweaked some more.  

 

We are using data and we have real pilots assisting us so we have to have some evidence that something is wrong, we can not adjust based on feelings. 

 

Thanks

bignewy

 

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