What´s the maximum number of c lines and f lines that a GigaBlue HD 800 SE with OpenMIPS and using cccam 2.2.1 can handle before starting to show problems?

I ask this question because I have certain lines that start off online but after a while that line becomes offline for a long period of time (knowing that the line is always online). And i´m not sure if this is due to having a lot of lines.