That's most likely a issue on their end. Dont worry, you've done great :) The game runs fine on my crappy Xperia 10 V with LineageOS. They either don't know how to figure it out, got some device settings messed up or their phone is ancient, not optimized and loaded with tons of programs, bloatware and files. I can confirm the loading screen is slow, but it loaded a lot faster on my now broken Xperia 5 II(which has a flagship chip). However the loads are not that slow as people claim it to be and it jump quickly to 100% after 50% static. People be complaining about everything these days, even when they get it for free smh. Patience really is a virtue, huh? This game got me hooked ngl. I just assume most people that download this aren't that "tech-savvy" and complain for the sake of complaining. No other positive reason they can find than that. It's really sad sometimes. "It can't be my issue, therefore it must be the dev" type mentality for realz.