content-encoding: gzip instead of brotli

[offirpeer]

I use IIS 10 14393 and I try to replace gzip compression with brotli.
I installed brotli on my server following the instruction from

applicationHost.config:

<httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files">
            <scheme name="br" dll="%ProgramFiles%\IIS\IIS Compression\iisbrotli.dll" />
            <!-- <scheme name="gzip" dll="%ProgramFiles%\IIS\IIS Compression\iiszlib.dll" /> -->
            <staticTypes>
                <add mimeType="text/*" enabled="true" />
                <add mimeType="message/*" enabled="true" />
                <add mimeType="application/javascript" enabled="true" />
                <add mimeType="application/json" enabled="true" />
                <add mimeType="application/atom+xml" enabled="true" />
                <add mimeType="application/xaml+xml" enabled="true" />
                <add mimeType="*/*" enabled="false" />
            </staticTypes>
            <dynamicTypes>
                <add mimeType="text/*" enabled="true" />
                <add mimeType="message/*" enabled="true" />
                <add mimeType="application/javascript" enabled="true" />
                <add mimeType="application/atom+xml" enabled="true" />
                <add mimeType="application/xaml+xml" enabled="true" />
                <add mimeType="application/json" enabled="true" />
                <add mimeType="*/*" enabled="false" />
            </dynamicTypes>
        </httpCompression>

But I still get content-encoding: gzip on the response header instead of br.

[mr-le]

try add staticCompressionLevel="7" dynamicCompressionLevel="5"