Hello   @Tapoguy2022 

To help isolate the issue, you could try a shorter Ethernet cable between camera and router and test for 1-2 days. 

Make sure router <Ethernet> PC, PC have stable internet connection from the same Ethernet cable. 

If still the same, can you help confirm some case details to help look into the issue further

1. May I know how about the led status on the camera when problem occurs? How often it goes offline via Ethernet
2. Please help collect the camera log file here and share the log file with us
3. when did you purchase the camera, and when did the problem start? 
4. The model of router, and network topology.e.g. ISP--Router model Archer C7<Ethernet > C320WS

Please help get the camera log and share the log file with us. 

How to Get the Log of Tapo Camera

If anyone uses Wireless connection and camera keeps goes offline, kindly try some tipp here For Wifi connection: What should I do if my Tapo smart camera keeps losing connection or going Offline?

Hello   @Stoyanov 

To isolate the issue, you could use the original power adapter and see if the camera could work stably.

From some user feedback, the camera may not get adequate power and cause a problem if you use a very extended or long power cable.