I ran OpenWRT on my wl-wn530hg4 without major issues. A drop once in a while. But no real issues. I was able to fully utilize my 50MBit internet connection.
I set the channel from 11 to 6 as this area is less crowded and disabled 5GHz band (clients were forced to 2.4GHz anyway). Hoped to fix fix the occasional drops.
I only got 20MBit effectively now. WiFi Link speed is 104MBit@802.11n
Even directly besides the router it isn't better. Tested with different clients.
I played around with some settings but wasn't able to change anything.
Would be glad for any tip. Here my config:
config wifi-device 'radio0'
option type 'mac80211'
option channel '36'
option hwmode '11a'
option path 'pci0000:00/0000:00:00.0/0000:01:00.0'
option htmode 'VHT80'
option txpower '20'
option country 'DE'
option cell_density '0'
config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11g'
option path 'platform/10180000.wmac'
option txpower '20'
option channels '1 6 11'
option beacon_int '103'
option short_preamble '1'
option channel 'auto'
option country 'DE'
option cell_density '0'
option htmode 'HT20'
config wifi-iface 'default_radio1'
option device 'radio1'
option mode 'ap'
option ssid '**SSID**'
option key '**PSK**'
option ieee80211w '1'
option network 'lan wan wan6'
option encryption 'psk2'
OpenWrt 21.02.2 r16495-bf0c965af0