40 Mbps hızım nedensiz yere 1 Mbps'lere düşmesi

Modem olarak ikinci değiştirdiğim modemdir. Zyxel T50B modem

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xDSLFwVersion: FwVer:5.12.21.0_B_A60901 HwVer:T14.F7_0.0
Line State: Up
Modulation: ITU G.993.2(VDSL2)
Annex Mode: ANNEX_B

INP downstream: 49468
INP upstream: 14904
shineGINPdownstream: 0
shineGINPupstream: 0
reinGINPdownstream: 0
reinGINPupstream: 0

TPSTC type: 64/65B PTM TC

near-end interleaved channel bit rate: 0 kbps
near-end fast channel bit rate: 44831 kbps
far-end interleaved channel bit rate: 0 kbps
far-end fast channel bit rate: 8191 kbps

near-end FEC error fast: 416
near-end FEC error interleaved: 0
near-end CRC error fast: 24
near-end CRC error interleaved: 0
near-end HEC error fast: 0
near-end HEC error interleaved: 0
far-end FEC error fast: 13
far-end FEC error interleaved: 0
far-end CRC error fast: 0
far-end CRC error interleaved: 0
far-end HEC error fast: 0
far-end HEC error interleaved: 0
DSL uptime : 1:42, 13 secs
DSL activetime :0 min, 16 secs

Downstream:
relative capacity occupation: 100%
noise margin downstream: 8.1 dB
output power upstream: 8.8 dbm
attenuation downstream: 17.4 dB

Upstream:
relative capacity occupation: 100%
noise margin upstream: 9.1 dB
output power downstream: 14.4 dbm
attenuation upstream: 2.8 dB