FCurve evaluation depended on FCurve.curval, which isn't threadsafe. Now only use this value for debug display, and pass the value instead of storing in the FCurve for all but debug-display.
FCurve evaluation depended on FCurve.curval, which isn't threadsafe. Now only use this value for debug display, and pass the value instead of storing in the FCurve for all but debug-display.