I have a test-network running with a bunch of ac/an Adapters.

I got connections up to 866MBits between the adapters (5Ghz mesh) but even with this fast connection I only got 40Mbit up/down Speed in direction to the internet.

Only on the one Adapter connected directly to the Internet i got the full speed (250/40).
I also played around with distance parameters with no measurable impact.
Are there other possibilities to speed up the mesh?

Thanks in advance,