@Fae Yes I am using VLANs. I didn't try 160Mhz yet as I am prefering more range with lower frequencies. I am using EAP683 UR. Based on my understanding this device should be the same as the LR...

Are there any updates on this? I am experiencing the same problems. It looks as if these problems have been known for many months. It's quite frustrating that TP Link is apparently ignoring all this.