Drastic loading time differences in android??

Hi, so I've built my project to two different Android phones, a galaxy $7 Edge and most recently my Pixel 2. When I use the $7 loading a stage can take well over a minute or even two but with the pixel it is nearly instant.  Everyone had complained about load times with UFE on mobile for years. Any idea what the difference could be?...  the pixel is a better phone but not that much better lol