Why are data viewer list so slow ? => clones for ever?

hi

you have to put it into perspective: it all depends on the power of the device on which the application is running, for example in preview mode my application runs faster on an ipad air 3 than on my android device and since not everyone has a device with 36 hearts I have to turn to the use of clones that’s why I’m looking for an effective recent tutorial for the creation of clones