Yes, I use IVS on both of them and have never had an incident where either has been tripped by accident, and I have been using them for years. The only thing I dislike about the IVS on the T-180 is that it is most sensitive in the middle of the image. IVS on the sides will hardly ever set off a tripline or intrusion zone. However, this did improve greatly after I moved the IVS detection from the camera to the NVR. I know you have tried just about everything with your camera to get it working correctly, but just wondering... have you tested it with a different ethernet cable? Last year one of my cameras started acting up and it was an intermittent problem until I thought of swapping the cable out for another. Problem solved. I kicked myself for not having tried that sooner.