I have tested several iptv providers, most work well with tvh but the issue is, as described in my first post, indeed the adding of services in tvh requires to scan (so tunes into each channel) for the services. If you have a provider with many stations that is going to take 1. super long (my current new provider has +15000 chans) and 2. the provider will ban your ip as it will appear as "hammering" their server when tvh scan (so switches stations) every x seconds (depending on what you set, default is 30 seconds).