Note 4 Slow/Laggy

| got the feeling that ky tote 4 is Super Laggy./ have 20 Apps Installed and the Standard Apps deactivated, But Games like Hearthstone are Super laggy and even if all Apps are deactivated there are just 1GB out of 3 free

The note 4 is running on 5.1.1 and is 3 days old.

Anyone got some ideas i could try?

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