I have a TP-Link Tapo C520WS camera. It worked perfectly for a year.
Recently, problems started to occur. The camera began losing connection to the router. After resetting the settings and reconnecting it in the TP-Link Tapo app, the camera works for 5–10 minutes and then loses Wi-Fi connection to the router again.

I do not have a Mesh network. I have tried different routers, always using only the 2.4 GHz band. I tried different DNS settings on the router, including 8.8.8.8. I tried factory resets. I tried removing the SD card and using the camera without it. The issue still persists.

I enabled logs on the camera and I can provide the diagnose_log file for analysis. Please analyze it and provide information on how to resolve this issue as quickly as possible. The camera is not working. I have several other TP-Link Tapo cameras and all of them work perfectly except this one.

Last lines from the log file are:

 <4>2025-11-18 11:00:54[STM]event(1763452777->1763452854) seq(26) file_id(9) entry_id(7)
<4>2025-11-18 11:00:54[STM]sync index
<4>2025-11-18 11:01:46[STM]clip end!
<4>2025-11-18 11:01:46[STM]rec status change: recording => pre

<4>2025-11-18 11:01:46[STM]add det event(1763452777-1763452904) to sync_clip!
<4>2025-11-18 11:01:46[STM]event(1763452777->1763452904) seq(26) file_id(9) entry_id(7)
<4>2025-11-18 11:01:46[STM]sync index
<4>2025-11-18 11:02:39[Transmit]buffer full! iov_size(1276) try_send(1276) sent(814) left(462)
<4>2025-11-18 11:02:39[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:40[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:40[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:41[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:41[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:42[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:42[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:43[HTTP]http client(local-1) send buffer is full!
<4>2025-11-18 11:02:43[HTTP]http client(local-1) send buffer is full!