limeSDR USB, srsLTE, open5gs with 100 PRB MIMO

Hi All,
I try to work with a combination of limeSDR USB, srsLTE, open5gs as far I do I can work MIMO with TM 4 PRB 50 without any problem but when I try PRB 100 I got a latency indication : LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRF status: O=0, U=0, L=49
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRF status: O=0, U=0, L=51
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRF status: O=0, U=0, L=50
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRF status: O=0, U=0, L=51

I try to change the pdsch_max_mcs from -1 to any value but not help. like mention here:
http://www.softwareradiosystems.com/pipermail/srslte-users/2018-January/001325.html
I just wondering is this not posiblle to do or I just need to do another adjustment ?
any idea is welcome.
best,
Anton

If you don’t get any suggestions here it could be an idea to post to the srsLTE mailing list: