"WR11 XT" lock when ETH connected to Gbit int.

Hi

We have a bunch of wr41/wr21 and they are very stable.
Just got our first WR11 XT and I’m experience a strange issue.
When connecting to a 1000Mbit port the router seems to lock up completely.
I’ve seen this several times and the only way out is to cut the power.
I know the port is only 100Mbit but router should not freeze.
Firmware is 6.1.0.3 (Jan 25 2018 17:13:09) and I can’t find ether newer or older.
I guess it is not the same as WR11?

Rgds
Johan

The WR11XT is the same as WR11.

Main diffrence is the Case is metal and not plastic.

does the WR!! work for a while then stop working?
do you have a lot of traffic on the network.

regards

James

Can’t replicate issue after updating to 6.1.1.2.
regards
Johan