Activity monitor says Outlook using 98% of system memory.  Any suggestions on what to do?

On June 21st I was going to make a video chat with a friend.  I was required to update the previous version (the previous version worked fine).  After the update, I was able to place my video chat with Messenger, but there was something I can only describe as "mosquito screening" as an overlay on the monitor.  I had to look at the other person through this layer.  It did not effect the video or audio on any other way.

How can this problem be resolved?

Thank you for any help.

 

Por qe mi destinatario no recibe mi señal de video cuando conecto este servicio, pero yo si los capto en mi monitor. Gracias,JC.