I have been using a setup of two XE75 devices, running in Access Point mode, and connected with wired backhaul. Typically, the Wifi transmission speed should be around 350 Mbit/s, based on my internet bandwidth. However, over the last couple of months I noticed the speed being throttled to 90-100 Mbit/s, as tested on a 5 GHz network (regardless of the device I am testing from). This affects both download and upload, and it's the same when the device is connected to Deco through an Ethernet cable.Outside the Deco devices, the home network runs at expected speed.

Typically, it was enough to restart the Deco devices to remove the problem. However, over the last couple of days restarting no longer helps. I have also tried restarting the ISP router, with no result. I have not been changing any settings recently, and did not receive a firmware upgrade. Please let me know if this is a known issue, and what are the ways to resolve it.