@Shmuey
The specs of your machine is
https://support.hp.com/au-en/document/c06308307
It has 1 USB 3.1 Gen 1 Type-C™ (5 Gb/s signaling rate, Power Delivery 3.0, DisplayPort™ 1.2, HP Sleep and Charge) port.
With only 5Gb/s signal rate, you are asking too much. Please note: refresh rate goes up resolution will go down and vise versa.
Natively, you should be able to connect to 2 FHD monitors.
Regards.
BH***
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