Lags using Dell D5000 with Latitude 6430u

[erbarraud]

Hi,

Made some research but eventually couldn't find any results for my issue.

I have a Dell Latitude 6430u with their D5000 wireless docking station.
I plugged 2 Dell 24 U2414h using HDMI and Display Port.
I use Logitech wireless mouse and keyboard

The Dock is literally on my computer, with best signal strength.

However I'm facing huge mouse, keyboard and display lags when browsing the web and using apps such as Excel.

Drivers and Firmware seems up to date.

1. Dell display Link Manager : 7.5.540.18.0
2. Dell Wireless hub application : 1.8.5.1280
3. Dell D5000 Firmware : 2.1.1.4731

The set-up is unusable so any tips would be more than welcomed.

Erik