I have done tests with a GA aircraft and the CRJ flying through moderate icing conditions: 8000 ft ISA -10C broken clouds. The GA aircraft lost speed from 110 kts to 75 kts and the stall alarm came on. So the icing builds up weight to generate an icing effect, just like it used to be in FSX. Switching to Icing Failure : VISUAL ONLY did not help at all. Which explains that people are still seeing the effect despite we thought eliminating the effect by changing the failure setting would help.