We are looking for the "marble.xml" file along the way.
/system/product/etc/device_features
Add lines.
<integer name="smart_fps_value">120</integer>
<integer-array name="fpsList">
<item>90</item>
<item>120</item>
<item>60</item>
</integer-array>
<integer name="defaultFps">60</integer>
/system/product/etc/device_features
Add lines.
<integer name="smart_fps_value">120</integer>
<integer-array name="fpsList">
<item>90</item>
<item>120</item>
<item>60</item>
</integer-array>
<integer name="defaultFps">60</integer>