Simply, my sprites position started flickering after I upgraded my SDK from 2.2.X from 2.3.1 and I'm not sure if it's because the update changed something or if it's something I don't remember changing.
So to test that I want to download the older SDK version but I can't find a place to download it.
Sorry I didn't keep you updated
It was an error caused by my custom LERP function that I did not made properly, so in the end it was a mistake on my side