I tested it with both Vyos and TNSR which both went to 3.2Gbps. A fresh install of pfSense still was around 2.6 to 2.7Gbps.

I did cause an issue though where DHCP stopped and I had to call Tech support about it. Finally got them to clear the Mac addresses which allowed me to get back online. I'm away for the next 2 weeks so won't be able to transition everything to Vyos until then.

Same issue I cause by trying multiple routers ended up just settling for the Asus another issue I faced was there DNS servers were strict couldn't use Cloudflare servers. But now I can after speaking with network team they did say they don't support 3rd party routers it's like I know that. Lol

Their support isn't really the best. I have kept the Mac address of the router that works and spoof it with the other routers to get around that issue. Seems to work fine . Learned that from my Virgin Media days .