The Setup: MacBook pro 2018 13" without touchbar Asus 24" Screen GooBay 62113/Inateck sc01001 USB-C Adapter
When the Screen is connected through the GooBay Adapter via HDMI, the performance of programs shown on the external screen is extremely poor, reaction to clicks take a long time, especially websites in chrome, firefox and safari take forever to react. The mouse is moving at usual speeds. When the window is shown on the MacBooks screen, it is working fine.
I now tried the same setup, but I used an Inateck USB-C Adapter instead and everything is working fine.
Do you guys have any idea what might be the problem here?