Switching from delivering a first video signal to a sink to delivering a second video signal to the sink is carried out. A repeater, connected to a previously authenticated sink, receives the first video signal outputted by a previously authenticated first source, and delivers the first video signal to the sink. The repeater receives a command to switch from the first video signal to the second video signal outputted by a second source. The repeater terminates receiving the first video signal, and delivers a temporary video signal to the sink so that the sink remains authenticated while the second source is being authenticated. The repeater sets the frame rate of the temporary video signal to a minimum variable refresh rate (VRR) supported by the sink. Upon completion of authentication of the second source, the repeater receives the second video signal and delivers the signal to the sink.