I scanned the DVB-T tuner today and I see that my DVB-T2 terrestrial signal provider added some new frequencies (maybe today or yesterday) in addition to the old ones for the same TV channels, I will test those new frequencies and see if they have the same problems with TV picture freezing, maybe there was a problem from dvbt-2 terrestrial signal provider. I'm not sure, I need to check that.
I tested other images yesterday but the same thing happened, so it's not a problem in OPenPli image. I returned it again to OPenPli today.
Edit: My tuner is installed in slot B, because C does not accept this newer DVB-T2 tuner