Uncorrected Blocks in multicast streams

Hello,

I am using my ISP IPTV service to add the channels in the Tvheadend server.

They are RTP multicast streams and I have configured as IPTV Automatic Network this way:

#EXTM3U
#EXTINF:-1 tvh-epg="disable", Telecinco HD
rtp://@239.0.X.X:YYYY

The channels are OK, but they have lots of Uncorreted Blocks in the status interface:

There are 2 switches between the ISP router and tvheadend server.

I am thinking to add a Raspberry Pi near the router with udpxy proxy and convert the multicast streams in unicast http sctreams.

Anyone have experience with this multicast streams?

I will appreciate any help.

Kind regards.

Tvheadend