IPsec VPN will transfer the data based on the remote IP and local IP. For two VPN tunnels, remote IP cannot overlap and local IP cannot overlap. Did you setup the client to LAN and use 0.0.0.0 as...

SG116E is unmanaged Pro switch. Maybe "Pro" means it still can be managed... Your physical connection seemly has not problem. Maybe your network has the IP conflict for 192.168.0.100?

Make sure that your camera supports 1000Mbps. Cat5e or higher cable can support 1000Mbps.

@borg_ph Really old device. It's important that whether your network can work normally. When the data need to processed by CPU, then CPU usage will increase. You can make your client run the...

@PepisBepis It's strange that you can access the switch but cannot ping the gateway. Is there any settings on your switch ？

@PepisBepis Could show some detail for the "connection" you lost? If you mean wired client cannot access internet, please check if the clent still get the correct IP address and whether can ping the...