While checking performance I discovered that namesys introduces 400x to 5000x increased latency.
See:
IPFS path:

IPNS path:

I did hard refresh so e-tag and in browser caching shouldn't matter.

Complete load requires almost 40x more time to complete under IPNS. I can repeat those results easily. You can also try for your self: fs:/ipns/ipfs.io and fs:/ipfs/QmTzQ1JRkWErjk39mryYw2WVaphAZNAREyMchXzYQ7c15n/