@Joseph-TP Hello. Sorry for typo mistake. It is 2.4Ghz. I am behind Freebox ultra configured as Bridge. Category 8 cable between them I am using a TPLink RE655BE as wifi repeater. Synology 923+ using...

10 days ago I installed latest update on my archer BE800. It was just rening perfectly before. After the update, I have some wifi instability over wifi 2.5 GHz and a lot of instability on wired port...