It is highly recommended that you use the same or similarly specified monitors when using Infinity. The monitors EDID that is passed to the host computer is handled on a first come, first served basis. Having different monitors that do not support a common resolution can result in loss of video if you are planning to concurrently share transmitters with two or more receivers.
Flow Chart
The diagram below shows you how the video is set up when connecting a receiver to a channel/transmitter.
Video Compatibility Check
Following the diagram above, you can see what happens if more that one receiver is connected to a transmitter. After the initial receiver has connected, all subsequent monitor EDID's are ignored, until all receivers are disconnected. For example, let's say that RX1 has a monitor which supports 1920x1080 and connects to the transmitter first. RX2 is then connected, however, its monitor only supports 1600x1200. Since the transmitter is already outputting 1920x1080, the monitor connected to RX2 will display an 'Out of Sync' message or alternatively will go blank. There is a receiver setting called Video Compatibility Check which is disabled by default. When enabled, if the receiver detects that the monitor is not able to support the video resolution being received, you will get a banner message on the screen notifying you of this fact.
EDID Optimisation
To speed up switching time, EDID optimisation prevents the host from going through its hot-plug detect routine each time you change a channel by comparing the monitors EDID with the EDID on the Transmitter. If the monitor supports the same resolution as is currently being output by the transmitter then the existing EDID remains and no changes are made to the output. With EDID optimisation disabled, this could add significant delay to switching. The video output is temporarily lost whilst the host accepts the new EDID and after which the monitor has to re-sync itself with the video signal that is being received.
Fixed EDID
The transmitters have an option to fix the EDID, which can either be set globally or on an individual basis. When fixed, the EDID from the monitor is simply ignored. This option is only recommended if the monitors all share a common resolution, however, it will ensure that the video switching time is kept at a minimum.