That set up should be fine. The Android issue is that our engineers can't possibly test every Android device, hence why the landing page for the app says little on support. Make sure you're running the newest version of the app and you should be fine. If problems arrise come back and post and we will do what we can for you.
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I've been using the app on my Samsung S8 phone which has 4gb ram and it seems to run smooth on my phone
I've tested the Samsung Tab A with WEDJ and a DJ-200 and it runs OK. Basic DJing is fine, it's when you try to scratch or beat juggle you notice a bit of lag. Some features don't work on an Android device and you can't use all of the performance pads on some options. I tried 5 Android tablets and I bought an iPad in the end.
I have also tried it with my Galaxy S9 phone and again for most things it fine.
The iPad works really well with all options available, it's like night and day
I bought all my tablets from Amazon because they have a great free returns policy. If I wasn't happy I just sent it back. If you do this make sure the packaging is relatively OK.
Good luck