As mentioned earlier, the Galaxy A10 uses an octa-core (1.6 GHz, dual-core + 1.35 GHz, hexa-core) Exynos 7884 processor along with a Mali-G71 GPU for enhanced graphical performance.
While the phone can very well handle everyday tasks like calling, texting, video streaming, social media, and so on, even multitasking and navigating between apps is great. The phone hardly shows any signs of lagging. However, when it comes to heavyweight gaming (PUBG, Asphalt), you might notice a slightly sluggish performance.
It features the new OneUI based on Android v9.0 (Pie). The latest OneUI is loaded with useful features including gesture navigation, dark mode, battery optimization, and also improved icon designs, among other things. The gaming issue aside, Galaxy A10 is overall a decent performer.