Logo exports appear blurry at small sizes even from high-res PSD

Hi,

I’m hoping someone can help me troubleshoot a persistent sharpness issue.

I’m creating multiple web logo sizes (970×200, 728×150, 468×96, and 320×66) from a high-resolution PSD that contains layered vector elements and live text. I’m exporting as PNG using both “Save for Web (PNG-24)” and “Export As → PNG” with Bicubic Sharper and Convert to sRGB checked.

Everything looks fine at larger sizes, but when I export the 320×66 version, the logo becomes noticeably soft or blurry — even at 100% zoom. I’ve tried:

• Starting from both EPS and PSD versions

• Doubling resolution for Retina (640×132)

• Using Smart Objects, Bicubic Sharper, and different interpolation methods

• Turning transparency on/off

• Exporting from both RGB and CMYK versions

The original PSD is crisp (including live text for the ® symbol), so I’m not sure why exports lose sharpness.

Is there a specific setting or workflow that preserves sharp edges in very small logos? Or is this just a limitation of Photoshop’s rasterization at small pixel counts?

Any insights would be greatly appreciated. Thank you!