某局点WA5530做portal认证后终端播放视频卡顿

现场开局结合imc做portal认证后终端播放视频卡顿，客户就在ap旁边且只有一两个终端，但将服务模板里删除portal配置后播放视频正常。

查看终端RSSI，RX/TX rate正常

<AC>dis wlan client mac-address xxxx verbose 

RSSI                              : 35

Rx/Tx rate                        : 650/650 Mbps

查看空口利用率和slot的cpu也不高

===============display ar5drv 1 channelbusy===============

ChannelBusy information

Ctl Channel:    36    Channel Band:80M

Center Freq:        42

Record Interval(s):  9

Date/Month/Year: 05/05/2023

       Time(h/m/s):   CtlBusy(%) TxBusy(%)  RxBusy(%)  ExtBusy(%)

01     13:54:57          2          1          0          0

02     13:54:48          0          0          0          0

03     13:54:39          0          0          0          0

04     13:54:30          0          0          0          0

05     13:54:21          0          0          0          0

06     13:54:12          0          0          0          0

07     13:54:03          0          0          0          0

08     13:53:54          0          0          0          0

09     13:53:45          0          0          0          0

10     13:53:36          0          0          0          0

11     13:53:27          0          0          0          0

12     13:53:18          0          0          0          0

13     13:53:09          0          0          0          0

14     13:53:00          1          0          0          0

15     13:52:50          0          0          0          0

16     13:52:41          0          0          0          0

17     13:52:32          0          0          0          0

18     13:52:23          0          0          0          0

19     13:52:14          0          0          0          0

20     13:52:05          0          0          0          0

  ===============display process cpu slot 1=============== 

CPU utilization in 5 secs: 12.8%; 1 min: 4.1%; 5 mins: 4.3%

       168      0.1%      0.1%      0.1%    [kdrvfwd8]

       169      0.1%      0.1%      0.1%    [kdrvfwd9]

       170      0.1%      0.1%      0.1%    [kdrvfwd10]

       171      0.1%      0.1%      0.1%    [kdrvfwd11]

       172      0.1%      0.1%      0.1%    [kdrvfwd12]

       173      0.8%      0.1%      0.1%    [kdrvfwd13]

       174      0.1%      0.1%      0.1%    [kdrvfwd14]

display portal user all查看用户信息，速率都是一样的大约1Mbps，imc侧配了限速。

 ===============display portal user all=============== 

Total portal users: 3

Username: guest@imc

 Inbound CAR: CIR 1048576 bps PIR 5242880 bps  

                 CBS N/A (active, AAA) 

    Outbound CAR: CIR 1048576 bps PIR 5242880 bps  

                  CBS N/A (active, AAA) 

    Web URL: N/A

Username: 110@imc

    Inbound CAR: CIR 1048576 bps PIR 5242880 bps  

                 CBS N/A (active, AAA) 

    Outbound CAR: CIR 1048576 bps PIR 5242880 bps  

                  CBS N/A (active, AAA) 

    Web URL: N/A

Username: 111@imc

 Inbound CAR: CIR 1048576 bps PIR 5242880 bps  

                 CBS N/A (active, AAA) 

    Outbound CAR: CIR 1048576 bps PIR 5242880 bps  

                  CBS N/A (active, AAA)  

    Web URL: N/A