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Getting 4k 60hz

Star I
System: ASUS Zenbook UX533FD (Zenbook 15 inch 2019 model)
Battery or AC: AC
Model: UX533FD
Frequency of occurrence: N/A
Reset OS: N/A
Screenshot or video: N/A
I'm currently looking for a way to be able to use my laptop with an external 4k display (Samsung LU28R550UQUXEN). What I've found so far is that my laptop can only output 4K 60hz through the USB C port, with the HDMI port being capped at 4K 30hz.
Would I be able to achieve that using those USB C hubs available on Amazon that have an HDMI output plus a few USB 3.0 ports? They claim to be able to do 4k 60hz as long as the laptop supports DisplayPort 1.4, which I have no clue if mine does or not. Plus I'm not sure if the USB 3.0 ports on the hub would take some of the connection bandwidth, capping the video output at 4k 30hz.
Or would it be better to go with a plain USB-C to DisplayPort adapter (and hence reserving the whole bandwidth to video, maybe)?
The extra USB ports would be nice so I could get some sort of docking station, but not if it means I can only get 4k 30hz.
Unfortunately I can't post a link to the hub I saw due to forum restrictions.
Thank you very much in advance for your time and help.