The 5 axis simultaneously RTCP mode is activated by G235 code (for the need of the simulation it is replaced by G43.4). when this mode is activated, the C axis has a shortcut behavior. the rest of the time are normal behavior.
my problem happens when I switch to shortcut mode to normal mode at the end of RTCP.
I don't know SetInterpolationMode fonction, I can try that and let you know