What Crossfire mode are you trying to use? AFR Compatable or Optimize 1x1 were the only modes that gave usable results last time I had a CFX setup in Elite. You may need to try older drivers.
I had no ideea of these options... I'm gonna put back the other card.
I started monitoring to see what's actually happening, turns out Odyssey was using the secondary card (which runs at x4) , and the primary was sitting idle .
The weird thing is that by using the secondary card (at x4) the game ran smoothly for 1-2 hours at 60 - 70 fps in stations and 90-100 on planets. Then crashed randomly.
On Medium settings ( except Texture filter quality which I set to trilinear and supersampling at 0.85x)
Now I have -20 fps in Odyssey on the first card (runs at x16)
It's perfectly possible that changes have been made to the game that prevent CFX from scaling correctly no matter what you do. Additionally, unless these are 8GiB 390Xes, CFX isn't likely to scale well, especially in Odyssey, even if it was working correctly otherwise. Odyssey is also extremely CPU limited in certain scenes, and these scenes will probably have negative scaling.
8GB 390x , they have the exact same memory, have 5 at my disposal.
True, but they didn't remove existing functionality. These are six-year old cards in a DX11 game.
They can run any game just fine...
DX11 games generally don't need any explicit support to work. Not saying functionality is guaranteed, but I definitely had CFX working in Elite: Dangerous on my 290Xes.
I played on Horizons on a PC made by me using 2 of these video cards. Worked really well.
Tried mining with them to see if it's a driver problem.
Seems to be running <50% of what they should.
