Maybe down to its model, being a mid range tablet strained by running a new OS with even more features, processes that mid or older models with low ram.
I don't know the exact problem or model well, but the a series is just normally good middle of the road devices. What is the year it was made, how much ram does it have and what processor? Have zou tested the benchmark scores for the model? Have you tested the tablet on samsungs device health apps? (It used to be in the members app last time I checked) not going to get everything you want on thats working
On the pessimistic side. There is another reason for updates. It makes you get a taste for features or what once worked and eventually in 3/4 years if that, it's not going to be able to perform with the target model anymore. That's when you are just getting security updates and then nothing. It makes you want or have to go out and get the best and newest model possible or hope everything works if you get a model not made for that updated OS / mid or budget freindly. It will always slow or stress devices it's not aimed at.
Every company does it so you have to get the best or near best product you can afford every time you upgrade etc. Apples been doing it for years
First up I'd look at the benchmark scores for your model, your search engine can find that. That will give you an idea how much slower different models are and where yours fits. Also use device care to see how much ram your using. Limited background apps and free both free space & ram.
Check the members app so you can test everything on your tablet to make sure its all correct and where it should be.
Last time I used that feature it was in the furthest section on the right of the members app.
If anything shows up in the tests, there is your answer. It not then get the geekbench app and run some tests. That will actually give you that devices scores to compare with what you should have.
Ans search online if you havent already to see if anyone else has had that problem, it could be a patch samsung are set to fix in the next minor update and if they are aware of it.
You should know where abouts you're at then hopefully. If it's a hardware issue and you have just brought it, do you have a warrenty or way to return it? It MAY even be an error with the actual update and that only way to sort that is a factory reset And start again. But that's the last thing to do. Other than return it of course.
