Layers performance on old mobile device

For the past couple of days I was trying to figure out why we are getting really low FPS on old Samsung Galaxy Tab A (2015). It seems that the issue we have is within layers, because as soon as we set layerableChildren to false, FPS goes from ~7FPS in static scene to ~35FPS. First assumption was that we are having way to many layers and complex scene, but even after reducing number of layers and optimising scene the FPS didn't change. The only change we see is that GPU time is increased with layers enabled.

We are using pixi 6.2 and layers 1.0.5
Is there anything we could do or it is simply a hardware issue and we have to do without layers?