Depends which IPTV provider you use.
In my experience, official IPTV services link Optus, Peacock or Now TV are about 40 seconds behind Satellite.
Some IPTV providers re-stream these official streams which adds another 10-15 seconds to the already delayed stream.
If you can find an IPTV provider with a "raw" or direct satellite stream, these are usually around 15-20 seconds behind satellite so less of a delay than direct with an official IPTV service.
In my experience, official IPTV services link Optus, Peacock or Now TV are about 40 seconds behind Satellite.
Some IPTV providers re-stream these official streams which adds another 10-15 seconds to the already delayed stream.
If you can find an IPTV provider with a "raw" or direct satellite stream, these are usually around 15-20 seconds behind satellite so less of a delay than direct with an official IPTV service.