Tvheadend

I have OSCAM configured as CAs. With other software it works without freezing.

This seems to be the reason for streams to freeze:

2018-02-07 22:56:21.156 cwc: Got unexpected ECM reply (seqno: 8858)
2018-02-07 22:56:21.357 cwc: Got unexpected ECM reply (seqno: 8860)
2018-02-07 22:56:21.582 cwc: Got unexpected ECM reply (seqno: 8862)
2018-02-07 22:56:21.784 cwc: Got unexpected ECM reply (seqno: 8864)
2018-02-07 22:56:21.978 cwc: Got unexpected ECM reply (seqno: 8866)
2018-02-07 22:56:22.159 cwc: Got unexpected ECM reply (seqno: 8868)
2018-02-07 22:56:22.360 cwc: Got unexpected ECM reply (seqno: 8870)
2018-02-07 22:56:22.552 cwc: Got unexpected ECM reply (seqno: 8872)
2018-02-07 22:56:22.755 cwc: Got unexpected ECM reply (seqno: 8874)
2018-02-07 22:56:22.991 cwc: Got unexpected ECM reply (seqno: 8876)
2018-02-07 22:56:23.172 cwc: Got unexpected ECM reply (seqno: 8878)
2018-02-07 22:56:23.567 cwc: Got unexpected ECM reply (seqno: 8882)
2018-02-07 22:56:23.759 cwc: Got unexpected ECM reply (seqno: 8884)
2018-02-07 22:56:23.962 cwc: Got unexpected ECM reply (seqno: 8886)
2018-02-07 22:56:24.177 cwc: Got unexpected ECM reply (seqno: 8888)
2018-02-07 22:56:24.379 cwc: Got unexpected ECM reply (seqno: 8890)
2018-02-07 22:56:24.559 cwc: Got unexpected ECM reply (seqno: 8892)
2018-02-07 22:56:24.774 cwc: Got unexpected ECM reply (seqno: 8894)
2018-02-07 22:56:25.158 cwc: Got unexpected ECM reply (seqno: 8896)
2018-02-07 22:56:25.361 cwc: Got unexpected ECM reply (seqno: 8898)
2018-02-07 22:56:25.552 cwc: Got unexpected ECM reply (seqno: 8900)
2018-02-07 22:56:25.756 cwc: Got unexpected ECM reply (seqno: 8902)
2018-02-07 22:56:25.969 cwc: Got unexpected ECM reply (seqno: 8904)
2018-02-07 22:56:26.150 cwc: Got unexpected ECM reply (seqno: 8906)
2018-02-07 22:56:26.365 cwc: Got unexpected ECM reply (seqno: 8908)
2018-02-07 22:56:26.567 cwc: Got unexpected ECM reply (seqno: 8910)
2018-02-07 22:56:26.760 cwc: Got unexpected ECM reply (seqno: 8912)
2018-02-07 22:56:26.974 cwc: Got unexpected ECM reply (seqno: 8914)
2018-02-07 22:56:27.177 cwc: Got unexpected ECM reply (seqno: 8916)
2018-02-07 22:56:27.357 cwc: Got unexpected ECM reply (seqno: 8918)
2018-02-07 22:56:27.585 cwc: Got unexpected ECM reply (seqno: 8920)
2018-02-07 22:56:27.787 cwc: Got unexpected ECM reply (seqno: 8922)
2018-02-07 22:56:27.977 cwc: Got unexpected ECM reply (seqno: 8924)

Any clue what is causing this?