Just had this problem myself. The hard plastic ramp on the filter that is caught by the mechanism on the refrigerator itself to hold the filter in does not hold it in quite far enough. To see if this is your problem have someone use the water while putting pressure against the filter to see if that increases flow. If so, even though it might be difficult, you have to add a small spacer on the top and the bottom of this ramp on the filter not on the fridge, don’t damage that part. I used a very,very, fine drill bit put two small holes top and bottom on the filter ramp and then inserted to very small tacks, not thumb tacks.