Assign a new style to a point cloud is a big/permanent fps hit

I am aware of Performance degradation with large point clouds and show condition on M1 Mac · Issue #11270 · CesiumGS/cesium · GitHub
but I am seeing a big and permanent frame rate drop if I reassign a new point cloud style. Even the default one.
Original frame rate is > 50, changing the style < 5 fps. Any workarounds? Is a custom shader worth trying

We have that on all OS and hard ware variants. Are there any plans to address it please?