@Vallik3223 @cnoberio You are correct. The way the TwinView Dock works is that it matches the chosen refresh rate setting of the phone when you connect them. If you want to change refresh rate, you need to disconnect the phone and reconnect it again after toggling to 144 Hz. This is not considered a bug, but a tad unintuitive perhaps.
@markosmiro105 Let me check and get back to you.