Well I believe I got it to work. The only odd thing is, they say to put it into PS3 mode, but my CSW has issues getting into PS3 mode, or staying into PS3 mode. PC mode seems to work for me, but I was able to use my Fanatec with Cronusmax. Did a few qualifying laps, and a single race, but I'm still working on the settings for the Fanatec. With the Gr.3 cars, I have my rotation set at 540. 900 requires a lot of turning, and 360 might have been too touchy for me.
Just make sure to read up on all the info for the Cronusmax, because you need a USB 2.0 Hub or lower. You also need to identify what ports on the USB Hub are Port 1(Wheel) and Port 4(Controller) for it to work There's also settings you need to check and/or set on the Cronusmax, but it's all in their online manual.