Question about Icy Box USB-C hub with 4K HDMI, PD ,IB-DK4050-CPD

I use the DK4050 on a Yoga X13 and have a lot of problems with network stability via LAN. The screens go black briefly from time to time (connection via DP and HDMI).

I do not know any Lenovo devices. This docking station works perfectly with an Asus Zenbook device.