ESP8266: During a speed test, the hotspot occasionally becomes undetectable by other devices.

[yael_leee]

Hello, I would like to inquire about a situation where three smartphones are connected to the ESP8266 module's hotspot, and multiple rounds of network speed tests are conducted using a speed test app. Occasionally, the module's hotspot becomes undetectable by all devices, and the module also fails to detect other Wi-Fi networks. After a power-off reboot, it returns to normal.

What could be the general cause of this issue?

[yael_leee]

The log shows that credits are insufficient. Is there any way to optimize this problem?

2883.167341] sip_txq_process skb_len 16 pkt_len 260 blknum 1
行 621: [ 2883.167355] sip_txq_process:before sub, credits is 12
行 622: [ 2883.167364] sip_txq_process:after sub 1,credits remains 11
行 625: [ 2883.197399] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 627: [ 2883.197425] sip_txq_process:before sub, credits is 11
行 628: [ 2883.197434] sip_txq_process:after sub 1,credits remains 10
行 629: [ 2883.197444] sip_txq_process skb_len 93 pkt_len 260 blknum 1
行 631: [ 2883.197465] sip_txq_process:before sub, credits is 10
行 632: [ 2883.197475] sip_txq_process:after sub 1,credits remains 9
行 635: [ 2883.227288] sip_txq_process skb_len 16 pkt_len 260 blknum 1
行 636: [ 2883.227300] sip_txq_process:before sub, credits is 9
行 637: [ 2883.227309] sip_txq_process:after sub 1,credits remains 8
行 638: [ 2883.247566] sip_txq_process skb_len 186 pkt_len 260 blknum 1
行 640: [ 2883.247604] sip_txq_process:before sub, credits is 8
行 641: [ 2883.247613] sip_txq_process:after sub 1,credits remains 7
行 644: [ 2883.257295] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 646: [ 2883.257318] sip_txq_process:before sub, credits is 7
行 647: [ 2883.257327] sip_txq_process:after sub 1,credits remains 6
行 648: [ 2883.257336] sip_txq_process skb_len 93 pkt_len 260 blknum 1
行 650: [ 2883.257355] sip_txq_process:before sub, credits is 6
行 651: [ 2883.257363] sip_txq_process:after sub 1,credits remains 5
行 654: [ 2883.287288] sip_txq_process skb_len 16 pkt_len 260 blknum 1
行 655: [ 2883.287301] sip_txq_process:before sub, credits is 5
行 656: [ 2883.287310] sip_txq_process:after sub 1,credits remains 4
行 659: [ 2883.317297] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 660: [ 2883.317305] sip_txq_process out of credits!
行 661: [ 2883.340564] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 662: [ 2883.340584] sip_txq_process out of credits!
行 665: [ 2883.347282] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 666: [ 2883.347291] sip_txq_process out of credits!
行 669: [ 2883.377276] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 670: [ 2883.377285] sip_txq_process out of credits!
行 674: [ 2883.402743] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 675: [ 2883.402778] sip_txq_process out of credits!
行 678: [ 2883.407402] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 679: [ 2883.407419] sip_txq_process out of credits!
行 682: [ 2883.437364] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 683: [ 2883.437381] sip_txq_process out of credits!
行 684: [ 2883.445943] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 685: [ 2883.445973] sip_txq_process out of credits!
行 688: [ 2883.467355] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 689: [ 2883.467371] sip_txq_process out of credits!
行 692: [ 2883.497370] sip_txq_process skb_len 73 pkt_len 260 blknum 1
行 693: [ 2883.497385] sip_txq_process out of credits!