SVG used as image is blury on iphone

问题

I am using an SVG based 64 as an image source.

This looks fine on a desktop, but when I view on my mobile (Iphone XS MAX - Safari), this looks really blury.

See below fiddle which has two images, one is just the raw SVG, and the second is the SVG base 64 used as source.

https://jsfiddle.net/t0e4sjw3/

You can see from the screenshot below, that the one used as an image is very blury and the filter seems to be a lot bigger than on the first image.

Is there any way to stop this?

<svg
      xmlns="http://www.w3.org/2000/svg"
      xmlns:xlink="http://www.w3.org/1999/xlink"
      version="1.1"
      width="110"
      height="110"
    >
      <defs>
        <filter id="dropShadow">
          <feGaussianBlur in="SourceAlpha" stdDeviation="1" />
          <feOffset dx="0" dy="0" result="offsetblur" />
          <feFlood flood-color="black" />
          <feComposite in2="offsetblur" operator="in" />
          <feMerge>
            <feMergeNode />
            <feMergeNode in="SourceGraphic" />
          </feMerge>
        </filter>
      </defs>
      <image
        xmlns="http://www.w3.org/2000/svg"
        width="110"
        height="110"
        filter="url(#dropShadow)"
        preserveAspectRatio="none"
        xmlns:xlink="http://www.w3.org/1999/xlink"
        xlink:href="data:image/svg+xml;base64,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"
        id="vsgDyp"
      />
    </svg>
    
    <img src="data:image/svg+xml;base64,<svg
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  version="1.1"
  width="110"
  height="110"
>
  <defs>
    <filter id="dropShadow">
      <feGaussianBlur in="SourceAlpha" stdDeviation="1" />
      <feOffset dx="0" dy="0" result="offsetblur" />
      <feFlood flood-color="black" />
      <feComposite in2="offsetblur" operator="in" />
      <feMerge>
        <feMergeNode />
        <feMergeNode in="SourceGraphic" />
      </feMerge>
    </filter>
  </defs>
  <image
    xmlns="http://www.w3.org/2000/svg"
    width="110"
    height="110"
    filter="url(#dropShadow)"
    preserveAspectRatio="none"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xlink:href="data:image/svg+xml;base64,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"
    id="vsgDyp"
  />
</svg>
" alt="snail" />

来源：https://stackoverflow.com/questions/63361569/svg-used-as-image-is-blury-on-iphone