it was broken in Windows 11 23H2 and fixed in Windows 11 24H2.
Hope this helps those who see it later.
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According to the official recommendation, I added a REG_DWORD 32-bit entry named DWMFRAMEINTERVAL with a value of 15 in the Winstations location of the registry.
After upgrading to 23H2, the frame rate is still only 30 fps after remotely setting the registry 15.
In 22H2, the frame rate could reach 60 fps after setting the remote desktop registry to 15.
it was broken in Windows 11 23H2 and fixed in Windows 11 24H2.
Hope this helps those who see it later.