@me_go_fast For meaning of switch crashes or freezes, did you try to ping your PC to ping one of the devices connected to the switch directly? This is confirm whether the switch freeze. And you can...

@bullet40 I think maybe these two version are using different hardware. And they use different platform. So the V6 software cannot be installled on V5 devices. Normally the devices can only use the...

@camerush I find greenbow VPN client on MacOS. https://www.thegreenbow.com/vpn_products.html And TP-Link has a FAQ for greenbow. https://www.tp-link.com/en/support/faq/2162/ But this is a paid...

@Bernhard42 In ER5120 V2 datasheet, it shows NAT Throughput: 350Mbps. Please note that NAT throughput will determines download speed. So you cannot get 500Mbps. And 350Mbps may be tested in...

@camerush Did you use the built-in VPN client on MacOS? It seems that MacOS only support IKEv2, cisco IPsec, L2TP over IPsec. TP-Link router only supports L2TP over IPsec. If you set up client to LAN...

@madleme Please confirm if you have enabled load balance. As I knew, for TP-Link should enable load balancing then link backup will take effect.