REGRESSION: Icing has no aerodynamic impact

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Are you using Developer Mode or made changes in it?

No - observed with and without, screenshots with devmode to show sim parameters.

Have you disabled/removed all your mods and addons?

No, but no mods used affecting the tested aircraft.

Brief description of the issue:

Accumulated ice has nearly no physical impact. Except for some slow ice weight accumulation there is no additional drag or reduction in AOA, airplane flies with the same attitude.
I recall testing this several times in the past and it was affecting the aircraft significantly ( though still not enough to make it lose control as expected with total icing).
Aircraft left to graduatly ice up till the maximum icing condition .
Icing state at the end of the accumulation:
Option → Icing is at 1.0
Cell Ice Accum 1.0
Deicable parts Ice accum: 1.0

Provide Screenshot(s)/video(s) of the issue encountered:

Icing condition is at the maximum:

Custom severe storm:

Provide coordinates (DevMode > Options > Display position)

Irrelevant, used custom preset

Provide time & date of the observed Weather issue

Irrelevant, used custom preset

Detailed steps to reproduce the issue encountered:

Create severe icing stormy weather.

PC specs and/or peripheral set up if relevant:

Are you using DX11 or DX12?


Are you using DLSS?


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Do you have the same issue if you follow the OP’s steps to reproduce it?

Provide extra information to complete the original description of the issue:

If relevant, provide additional screenshots/video:

Definitely a regression.

See also this thread: Improve icing physics on aircraft - #2 by PaulausPilot