Hello, I am new to the community and need help with a laptop/dock/monitor configuration.

I have the following hardware I would like to connect for an efficient office.

Laptops

• XPS 15 (9550)
• XPS 12
• Latitude 7480 (mini-DP port) 

Monitors 

• 2715Q
• 2417H

Docks 

• WD15
• TB16

Ideally I would like a dual monitor setup running the 2715Q @ 4K60Hz and 2417H at 1080P. Using the WD15 which is compatible with the Latitude I top out at 30Hz on the 4K and the 24" is fuzzy unless I direct connect the HDMI to the Latitude. I bought the TB16 with Thunderbolt hoping it has better through put for the monitors.

The drivers have been installed for the dock on the XPS 15, works fine, and Latitude. When connected to the TB16 for with full sized DP cable the 2715Q is not receiving a signal from the Latitude. I searched but could not tell if the TB16 + dual monitors (4K) would work on the Latitude with a mini-DP USB C port.

Looking for advice on the best configuration. Thank you.