DVB_SKY_2 Driver crash

Hi,

I'm using an Odroid C2 with 8 DVB-C/T (6x TechnoTrend TT-TVStick CT2-4400 and 2xTECHNOTREND TT-connect CT2-4650).
Those DVB-C are connected via 2x 4 ports USB 3.0 which are connected in USB C2 ports.

The problem is that if I'm using 4 or maximum 5 DVB-C, Odroid C2 has a CPU usage about 30-40% from 400%, so pretty low usage.
Now the issues are starting: if I'm trying to start another DVB-C or if I'm doing for example something which uses high CPU suddenly Odroid C2 is rebooting. This is the first thing.

The second thing is that the DVB_SKY_2 seems to crash when the mumudvb is starting on a DVB device.

The third issue is that I can't change the CPU frequency. I've tried from u-boot using setenv max_freq "1296" and add to bootarg and also from cpufreqd. Nothing is changed, same 1.54GHz speed.

The system is ArmBian with Kernel 4.17. I've notice same behavior also with 4.15, 4.14 or 4.13. The software used for streaming the DVB-C channels is mumudvb.
I don't know what is the issue and why this behavior.

I've tested both versions of kernel: Odroid C2 and arm64 (arm64 is booted from Grub EFI, the FIT kernel is booted directly from U-Boot)

This is the link from armbianmonitor -u command: http://ix.io/1ka7

Kind regards,

Adrian