Thank you for that feedback.
I don't know why those startup scripts didn't copy over from my files folder.
I'm going to do deeper checks.
For now, I'm just going to upload the basic image with no software built in OTHER THAN adblocker with blocklists and enabled, and the wireless turned on and the same configuration passwords.
I do know that having all those services enabled make the wifi break as I was able to discover. LuCi became barely usable and I had to resort to ssh which was also a little sluggish to delete the start up scripts manually.
I use mainly 5GHz here but all my devices out of range are on 2.4GHz, I haven't witnessed any quality issues with those.
Can you try changing the wattage of the 2.4GHz and see if that improves the quality? Maybe change your channel? I keep it on channel one as it is the lowest frequency and travels the furthest but it is possible others around you are using the same channel making it bad quality.
I wouldn't put it past the driver, though. It's usually the driver support that is bottle-necking the device.