Vexnet Link Dropping out

I know some teams had issues with this problem earlier, but I haven’t seen recent posts about this. We were at a tournament a little over a week ago and we would loose link between our controller and cortex processor during competition rounds. In one round, we lost link twice, but was able to relink each time after cycling our controller off and back on again. We have remotely mounted our vexnet key per the released rules, but we continue to experience the problem. Are there any updates as to the cause and/or solution to this problem. Thanks.