@mdllogom 

First please know that TP-Link does not have spanish support so our assistance is based off how well Google translates text.  Form what it says you are using a Extender through ethernet and experiancing latency issues while playing games, specifically overwatch.  Even if you use the ethernet port you are still communicating through the extender to the router.  Extenders do not improve service speed, only range.  In fact due to how the backhaul of an extender works your speed through it will be less.  We do not recommend using a Range Extender on a game that has heavy bandwidth usage as there will be latency problems.  

You may also want to look at PowerLine adapters Rated AV1000 or up, or a WiFi Mesh system like our Deco Series.

Best Regards