We don't have full client isolation on standalone APs, which is only available with a ZoneDirector,
but you can use these commands to insure that you have not disabled the BSS relay that permits
clients associated to the same WLAN to intercommunicate.
Depending on which/how many WLANs you define, try enabling ap-bridge mode with disabled
directed-multicast (our proprietary broadcast to unicast feature). For example, if you use an SSID
on both bands of your AP:
set ap-bridge wlan0 enable
set qos wlan0 directed multicast disable
set ap-bridge wlan9 enable
set qos wlan9 directed multicast disable
I look forward to hearing your results. Hopefully disabling directed multicast helps the Chrome.
Good luck and best regards.