Slow LAN After Merlin

[os2]

I have an issue with AX11000 pro and BE96U. Updated both with latest Merlin (BE96U with 3006_102.2_2 and AX11000Pro with 2004.388.8_4) and suddently all my wired connection drop to 100mb from 1000. My NAS sit on LAN aggregation and now it is only 150mb. Everything was working fine before. I was able to put every router to restore mode and reflash with stock firmware. However the LAN speed still only 100.
Does any one having solution for that problem ?

 

[RMerlin]

Check your cables. One of them is probably unreliable, causing the link to be renegotiated to 100 Mbps.

 

[os2]

All my cable CAT7, 10 GB. i check them directly from my modem and got normal speed. Router Qs internet speed also normal. Only 4 LAN port degraded to 100 from 1000

 

[Squall Leonhart]

looks like shielded cables, are these grounded correctly at a plate?

 

[os2]

yes. And everything was working fine for last 4 month. My router speed is OK 1 GB, but LAN port only 100. Router does not show any degradation on spees

 

[ChatmanR]

Verify port settings: Access your router's admin interface and check the LAN port settings. Ensure they are set to auto-negotiate or manually set to 1000 Mbps Full Duplex
Reset to factory defaults: Perform a hard reset on both routers using the physical reset button. This can sometimes resolve issues that persist after firmware updates

 

[os2]

updated to new firmaware
3.0.0.6.102_37038, everything back to normal