The gauges are supposed to be able to replace the stock Bendix stack 1:1 and so should in theory work great with the C310 FreeRadio version too. It did take some manual tweaking, because initially the radios were all stretched and didn't fit, but I figured it out (can post the panel.cfg if MilViz are OK with that?). A few shots:

 

 

 

 

 

The frame rate is very nice. On my system, the 3D Analog version stutters a bit and is about 5-8 FPS slower than many equal addons. It drops as low as 12-13 FPS occasionally where as the FreeRadio version is always in the high teens or higher. With the FSD radios, the FPS is only about 0.5 FPS lower than the default radios. Even if you have a faster system, this gives you a nice alternative C310 panel layout with all-Bendix radios.

feel free to post the cfg.

I expect the difference in fps and smoothness between the stock analog cockpit and the free radio version is due to the 3D knobs in the stock cockpit. We all love the eye candy, but 3D knobs, switches, etc. add polygons and that places more stress on your computer's CPU. I wish more developers would follow MilViz's lead and build virtual cockpits with a free radio option, at least in aircraft where custom radio installations would be realistic.