当我使用wpa_supplicant进行WiFi漫游时，我希望漫游规则从信号差的AP切换到信号好的AP（根据信号水平漫游）。然而，在测试过程中，我发现 wpa_supplicant 根据估计的吞吐量进行漫游。可能是什么原因？以下是输出的日志信息。
wpa_supplicant: wlan0: 2: 62:90:73:b0:f3:48 freq=2462 level=-70 snr=19 est_throughput=90000
wpa_supplicant: wlan0: 3: 22:90:3d:93:70:af freq=2462 level=-32 snr=57 est_throughput=65000
wpa_supplicant: wlan0: Selecting BSS from priority group 2
wpa_supplicant: wlan0: selected based on RSN IE
wpa_supplicant: wlan0: selected BSS 62:90:73:b0:f3:48 ssid='1906'
wpa_supplicant: wlan0: Considering within-ESS reassociation
wpa_supplicant: wlan0: Current BSS: 22:90:3d:93:70:af freq=2462 level=-32 snr=57 est_throughput=65000
wpa_supplicant: wlan0: Selected BSS: 62:90:73:b0:f3:48 freq=2462 level=-70 snr=19 est_throughput=90000
wpa_supplicant: wlan0: Allow reassociation - selected BSS has better estimated throughput
我希望漫游规则从信号较差的 AP 切换到信号良好的 AP，而不是基于吞吐量。