Hi PROPHESEE Support,

So i got two problems, the first one is when i use the prophesee_ros_viewer.cpp from the prophesee_ros_wrapper(https://github.com/prophesee-ai/prophesee_ros_wrapper), sometimes i get blank lines in the middle of the image, see the image below(the part where i circled has missing events),

I was wondering what caused this, why is the events missing? Also, is it a ROS problem or the events are just abandoned?  I looked into the viewer code and i don't think there is a problem with it, i'm a bit confused on what is going on.

Second problem is that, when i tried storing the events from the prophesee node in ROS(like in the prophesee_ros_viewer.cpp), and stored them in a txt file. I drew them in a plot with the x-axis as the event index and y-axis as event timestamp. Graph as below.

many of the events have the same time stamp, which should not happen(i saved like 12 digit decimals), just wondering why this is happening. Is it a ROS problem? 

It would be great if you guys could give some help or hints on how to solving this, thanks so much.