NR5309 router problem

krk

Hello everyone,
I have a problem with the NR5309 router (V1.00(ACNA.0)b1). Most of the time it works OK, speeds around Download [366.31 Mbits], Upload:[50.36 Mbits] but every few hours or sometimes more often they drop to Download 8. Mbits, Upload 1 Mbits. I have set static frequency ranges or technologies NR5g-NSA/LTE and NR5g-SA/NR5g-NSA/LTE but the problem still occurs. (NR5g-SA does not work in my network). If I change anything in the router band settings and force the modem to reconnect, the speeds return to the correct values. Using this sim card in the phone I do not have these problems.

It is very annoying, I also made a table with Cell data, the first column OK speed in the second and third during the problem. Please help me :)