HTTP DOWNLOAD multipart/multithread problem

[punto]

Do you have problems with the Nemo Outdoor, HTTP DOWNLOAD in urban environment with dense 5G coverage Cband implemented network, with activated parameter multi part = 5 , for example ?
Seems like if used multipart = 5 , some problems occur with blocking phones/script to go on further, until restart ?
No problems if the multipart=1 , not used multithreading, but then will never be reached peak network/cell throughput during the measurements.
Please, let me know how you solved or do you similar problem ?
Best regards,
P

[NetworkTest]

Which NO Version ?
Which Phone Model ?
handy is same issue ?