Most probably someone had previously made some settings on your device.
The quick and dirty way to solve this is to reset the device (System -> Reset Configuration) and then use Quick Set to do a fresh setup of your device.

@sacedo: out of pure curiosity, could you try low lower the values of amsdu-limit and amsdu-threshold from 8192 to something like 2048 or lower or even zero. They are found in your wireless interface in HT tab. These options are useful for increasing throughtput but in very noisy environments they d...

For those of you that have disconnects, reconnects and reassociations especially ion iOS devices, and i think there are a lot of you since this is an old issue, try this: My device is RB951G-2HnD and various iOS 13, 14 devices. Before bellow setting all of them were reassociating and generated the l...

For those of you that have disconnects, reconnects and reassociations especially ion iOS devices, and i think there are a lot of you since this is an old issue, try this: My device is RB951G-2HnD and various iOS 13, 14 devices. Before bellow setting all of them were reassociating and generated the l...