Yea I just want to do at least 60hz for my work setup. I ended up pulling the trigger on a club 3d one on amazon for like $21.That adapter requires Display Stream Compression support which is found only on the latest GPUs. So a laptop will not have it, it's a waste of money if you are only looking to get 60 Hz.
You need a Displayport to HDMI 2.0 adapter, Club3D and CableMatters should have suitable options. This allows for 4K 60 Hz. Make sure you check what version of Displayport is supported by the docking station, it might be limited as well. A lot of docking stations and USB multiport hubs are a pile of crap when it comes to supporting higher refresh rates.