Strange rendering problem on stage3d

[leucocyte]

Problem Description

Hi,

we've encountered strange problem in our game for some specyfic phones. 99% users don't have this problem.
Whole screen is shaking:
https://drive.google.com/drive/folders/1j-pjFvzIyzdKe099tOvNfxRUoHW8a4xs
https://github.com/user-attachments/assets/c13c6baf-7426-4d83-9026-a1f53e40cf9e

It happens mostly on motorolla phones:
Motorola G54 Power Edition 5G
Motorola G55 5g
Motorola moto g64
Poco m7-pro-5g

It happened on AIR 51.1.4.1 and AIR 51.2.2.7 on Android with compiler option: -float=false (without it there are some other issues with lightning)
I can't reproduce it on my test phones.

We're using Starling + Away3d combination. I think it's caused by some specific texture / shader that we are using in Away3d as it doesn't happen everywhere in a game. We're using ATF textures: ETC2_RGBA, ETC1_RGB, ETC1_RGB_A

Do you have any ideas what could be causing this problems?

[marchbold]

Is there a version of AIR that doesn't have this issue or is it a long standing issue?

[leucocyte]

We were mostly testing on those 2 versions of AIR. But didn't found any that didn't have those problems.

We've made further investigation and it looks like it's related to specyfic GPU:
Imagination Tech BXM 8-256 (950 MHz)

It's known for having some driver related problems and rendering issues in many games. We'll try to get phone with this GPU and made some test to find what exactly is causing this issue. I'll let you know :)