Blender 2.91 Blurry texture in Cycles Render

Hello everyone,

I’m experiencing blurry results for wooden texture of an object in an interior scene. Despite the interpolation is set from Linear to Closest in Shading node, increased Render samples, still nothing changes…
Wood texture resolution is fine, looks well in Viewport, though bad result once render via Cycles. Here reference photos. Please help what would be wrong with texture…

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The material preview mode is Eevee. If you prefer that result, you can use Eevee instead.

thanks for reply.
but I need to render in Cycles, for more realistic results. While whole scene looks nice in cycles, only texture of wooden stand appears weird… any settings of cycles to modify?