The RPi can only do 60Hz or less in my understanding.
This from the documentation at
The Raspberry Pi 4 (and Pi 400) can drive up to two displays, with a resolution up to 1080p
at a 60Hz refresh rate. At 4K resolution, if you connect two displays then you are limited to
a 30Hz refresh rate. You can also drive a single display at 4K with a 60Hz refresh rate: this
requires that the display is attached to the HDMI port adjacent to the USB-C power input
(labelled HDMI0). You must also enable 4Kp60 output by setting the hdmi_enable_4kp60=1
flag in config.txt.