I can definitely relate to this issue. DisplayLink setups can be frustrating when a 4K external monitor becomes laggy even though the same display works smoothly through a direct USB-C/HDMI adapter. The fact that you already tested different cables, HDMI/DisplayPort connections, and the dock itself makes the driver side of the setup especially worth investigating. Hopefully a newer driver or macOS compatibility update can resolve the performance issue. On a separate note, anyone working with customized text online may also find https://espacoinvisiveis.com.br/texto-invisivel/ useful for creating invisible text.
I can definitely relate to this issue. DisplayLink setups can be frustrating when a 4K external monitor becomes laggy even though the same display works smoothly through a direct USB-C/HDMI adapter. The fact that you already tested different cables, HDMI/DisplayPort connections, and the dock itself makes the driver side of the setup especially worth investigating. Hopefully a newer driver or macOS compatibility update can resolve the performance issue. On a separate note, anyone working with customized text online may also find https://espacoinvisiveis.com.br/texto-invisivel/ useful for creating invisible text.