Lets talk about usteer

I am trying to get the band steering work to switch my 2,4G clients to 5G band but unfortunately it does not work as expected. I have read documentation and it seems like my config is OK but I'm definitely missing something.
I am using usteer 2022.08.18~7d2b17c9-r1
Here is my config:

config usteer
        option network 'lan'
        option syslog '1'
        option local_mode '0'
        option ipv6 '0'
        option debug_level '3'
        option min_snr '-85'
        option roam_scan_snr '-55'
        option signal_diff_threshold '8'
        option roam_trigger_interval '11000'
        option load_balancing_threshold '1'
        option band_steering_threshold '1'
        option band_steering_interval '10000'

Clients:

root@OpenWrt:~# ubus call usteer connected_clients
{
        "hostapd.phy0-ap0": {
                "7e:2b:e2:84:a7:fb": {
                        "signal": -34,
                        "created": 10772764,
                        "connected": 10708000,
                        "snr-kick": {
                                "seen-below": 0
                        },
                        "roam-state-machine": {
                                "state": "ROAM_TRIGGER_IDLE",
                                "tries": 0,
                                "event": 0,
                                "kick-count": 0,
                                "last-kick": 0,
                                "scan_start": 0,
                                "scan_timeout_start": 0
                        },
                        "bss-transition-response": {
                                "status-code": 1,
                                "age": 39938
                        },
                        "beacon-measurement-modes": [
                                "PASSIVE",
                                "ACTIVE",
                                "TABLE"
                        ],
                        "link-measurement": true,
                        "bss-transition-management": true,
                        "multi-band-operation": false,
                        "measurements": [
                                {
                                        "node": "hostapd.phy0-ap0",
                                        "rcpi": 161,
                                        "rsni": 68,
                                        "rssi": -30,
                                        "age": 26844
                                }
                        ]
                },
                "da:f5:12:a5:98:07": {
                        "signal": -39,
                        "created": 13942944,
                        "connected": 13819000,
                        "snr-kick": {
                                "seen-below": 0
                        },
                        "roam-state-machine": {
                                "state": "ROAM_TRIGGER_IDLE",
                                "tries": 0,
                                "event": 2663952,
                                "kick-count": 0,
                                "last-kick": 0,
                                "scan_start": 3858085,
                                "scan_timeout_start": 0
                        },
                        "bss-transition-response": {
                                "status-code": 0,
                                "age": 17748
                        },
                        "beacon-measurement-modes": [
                                "PASSIVE",
                                "ACTIVE",
                                "TABLE"
                        ],
                        "link-measurement": true,
                        "bss-transition-management": true,
                        "multi-band-operation": false,
                        "measurements": [
                                {
                                        "node": "hostapd.phy0-ap0",
                                        "rcpi": 154,
                                        "rsni": 63,
                                        "rssi": -33,
                                        "age": 57946
                                }
                        ]
                }
        },
        "hostapd.phy1-ap0": {

        }
}