From time to time, when doing an indoor training with Edge 1040 Solar + HRM Tri + Vortex trainer I get drop of power on Edge 1040 or even it get disconnected from trainer for few seconds.
HR is monitored properly, so seems to be problem only between Edge and Vortex.
It is quite random, during hour happens few times to drop the power read by Edge, despite I can feel resistance is more-less same and my output stay on similar level, doesn't drop to 0. Edge is mounted on bike hold, so not moving it. Phone is always in same position, connected to wifi, so shouldn't be special interference (podcast or Netflix playing on it).
Any idea what can cause the problem?