speed dropped

I am on "super" fibre, the speed was around 15-18Mbps, its about two weeks and the speed is no more than 9.50Mbps

Today was really tragic (>3Mbps) I had to reboot the router a couple of times.

here is thestatus of the router:

 Line Quality

Upstream line rate (kbit/s):2000
Downstream line rate (kbit/s):38329
Upstream noise safety coefficient (dB):14.5
Downstream noise safety coefficient (dB):6.6
Upstream interleave depth: 1
Downstream interleave depth: 2217
Line standard: VDSL2
Upstream line attenuation (dB): 0.1
Downstream line attenuation (dB): 14.2
Upstream output power (dBm):5.3
Downstream output power (dBm):13.3
Channel type:Interleaved

I am not sure what's going on there...

thx in advance

chris