Windows 10 affects my performance?

So I installed Windows 10 recently, and since then I'm having trouble clicking targets or the right places I want. It feels like the width of my cursor-affected-area has shrank or something of the sort. Anyone has any idea what's the matter with me x'D? Can I somehow fix it with Windows 10 cursor settings or something? I tried messing with both Windows 10 and in-game settings and had no luck so far.
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