I'm humbly asking for help with my crazy unprofessional setup...
I have 4 Raspberry Pis serving as a Wifi to Ethernet bridge with Pi-Hole as DNS server. The second layer is TP-link TL-R600 VPN router as Load balancer. The third layer is TP-Link's LAN connected to the second WAN of ASUS AC88U with NAT switched off on WAN.
The download speed increased, no problems there but I can't open (or takes much longer) every other webpage. I suspect it's a NAT problem, I tried setting up DMZ on TP-Link but it didnt change anything.
Please help with tuning this beast.