AX6000 Download consistently slower than upload across backhaul...

So I have gigabit internet on fiber. With a wired connection to the net, I get consistently 900 up and down.

I'm trying both an Orbi AC3000 setup, and an AX6000 that I just got today. I have my Mac hooked up to the WAN port on the satelite.

With the AC3000 I would get about 380 down and maybe 450 to 600 up....

I got the AX6000 hoping those speeds would improve, and the upload did quite a bit. But my download speed, from router to satelite out the ethernet to my mac is still very slow (compared to a wired connection of course). With the AX6000 I'm getting now about 300 down, but 900 up! So it's actually slower in DL speeds than the AC3000 was.

Again, if I just wire my computer with a long ethernet cable to a WAN port on the main orbi router, either the AC3000 or AX6000 I get 900+ up and down. But something about my setup is pretty drastically limiting my download speeds across the backhaul...

Just curious if anyone has any ideas as to settings that might cause this? The AX6000 was crazy expensive and if I cant' solve this, no reason to keep it...

Thanks to anyone who might hve advice...