I also have a Tab A (8.0) 2gb but the game ran fine
I honestly dont know your problem but good luck fixing it
@AndrewGarrison apparently the tab a says it's incompatible with sr2 but my phone (a Samsung j36) has the same specs, and SR2 IS compatible on that
I have a Samsung Galaxy Tab S4 and the game works perfectly. I have 0 problems. And looks awesome.