Thanks for reply, great guy but Rex RotateTo seems not ported :( I am using these two.
Back to that effects. I read this:
"the color blends (like multiply and screen) being the easiest for the GPU to process"
so I really would like to use only few objects (with animation) with for example overlay and I already tried that thing with special layer and graphic effect set to that layer instead of objects, but there is still low FPS. I think setting effect to layer is not solution, it seems that fps drop depends on something else, but I dunno exactly.