Can't enable ff, compression or bursting in wireless options

Hi i have a Dlink DIR-835 A1 router with LEDE 17.01.2 and these are my settings in /etc/config/wireless:

config wifi-device 'radio0'
        option type 'mac80211'
        option channel '11'
        option hwmode '11g'
        option path 'platform/ar934x_wmac'
        option htmode 'HT40-'
        option country '00'
        option beacon_int 500
        option noscan 1
        option ht_coex 1

config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'lan'
        option mode 'ap'
        option ssid 'Elvz-Wifi'
        option wds '1'
        option hidden '1'
        option encryption 'psk2+aes'
        option key '12345678'
        option dtim_period 255
        option bursting 1
        option ff 1
        option compression 1
        option doth 1

config wifi-device 'radio1'
        option type 'mac80211'
        option hwmode '11a'
        option path 'pci0000:00/0000:00:00.0'
        option channel '40'
        option htmode 'HT40-'
        option country '00'
        option beacon_int 500
        option ht_coex 1
        option noscan 1

config wifi-iface 'default_radio1'
        option device 'radio1'
        option network 'lan'
        option mode 'ap'
        option ssid 'Elvz-Wifi-5G'
        option hidden '1'
        option encryption 'psk2+aes'
        option key '12345678'
        option dtim_period 255
        option bursting 1
        option ff 1
        option compression 1
        option doth 1

After restarting the router these are the status of both wireless 2.4Ghz and 5Ghz:

root@LEDE-DIR-835:~# cat /tmp/run/hostapd-phy0.conf
driver=nl80211
logger_syslog=127
logger_syslog_level=2
logger_stdout=127
logger_stdout_level=2
country_code=00
ieee80211d=1
hw_mode=g
beacon_int=500
channel=11

noscan=1
ieee80211n=1
ht_coex=1
ht_capab=[HT40-][LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1][DSSS_CCK-40]

interface=wlan0
ctrl_interface=/var/run/hostapd
ap_isolate=1
disassoc_low_ack=1
preamble=1
wmm_enabled=1
ignore_broadcast_ssid=1
uapsd_advertisement_enabled=1
wpa_passphrase=12345678
auth_algs=1
wpa=2
wpa_pairwise=CCMP
ssid=Elvz-Wifi
bridge=br-lan
wpa_key_mgmt=WPA-PSK
okc=0
disable_pmksa_caching=1
wds_sta=1
bssid=c8:d3:a3:61:07:b1
dtim_period=255

root@LEDE-DIR-835:~# cat /tmp/run/hostapd-phy1.conf
driver=nl80211
logger_syslog=127
logger_syslog_level=2
logger_stdout=127
logger_stdout_level=2
country_code=00
ieee80211d=1
ieee80211h=1
hw_mode=a
beacon_int=500
channel=40

noscan=1
ieee80211n=1
ht_coex=1
ht_capab=[HT40-][LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1][DSSS_CCK-40]

interface=wlan1
ctrl_interface=/var/run/hostapd
ap_isolate=1
disassoc_low_ack=1
preamble=1
wmm_enabled=1
ignore_broadcast_ssid=1
uapsd_advertisement_enabled=1
wpa_passphrase=12345678
auth_algs=1
wpa=2
wpa_pairwise=CCMP
ssid=Elvz-Wifi-5G
bridge=br-lan
wpa_key_mgmt=WPA-PSK
okc=0
disable_pmksa_caching=1
bssid=c8:d3:a3:61:07:b3
dtim_period=255

is there something wrong??? i would really like to increase the transfer speeds.