Octagon sf8008 4k openATV RAM memory overflowing ?

Hello, I described this problem in the Ncam topic, but the same is on oscam, openATV also on 7.3 it occurs. I watch channels encoded from several satellites (different encodings), everything works fine until suddenly, after switching to the encrypted channel, the sound disappears completely, restarting Ncam does not help, a quick restart of the tuner also nothing, only a deep restart of the tuner restores everything to normal.