Tvheadend

Hello,

I'm setting up two Kodi players on RPis at home :

- Server : a Rpi 3B+ with a TV Hat running Libreelec 8.2.5 & Kodi 17.6 / TVHeadend Server 4.2.6-7

- Client : a Rpi 3B+ running Libreelec 8.2.5 & Kodi 17.6 / TVHeadend Client 3.4.27.1

Both Rpis are on the same wired network.
TVHeadend Server configuration went well : all channels found, recording ok, timeshift too.

Everything is ok but very often, on both devices, the image freezes, I can't stop or go back in menus, I have to hard reboot the PRi. It occurs after few minutes or 1 hour, sometimes several times per day, sometimes none...
Most of the time freezes happen when changing channel.

Any ideas ?

Thanks