Two sayings, First, all things in moderation.
Second, practice what you preach.
I'll start with the second saying, I spend way too much time on line. Clearly, it's a dysfunction for me, although I like to get some benefit out of my time, so I spend lots of time reading about how to better help myself from a physical and psychological perspective
Next, about moderation, I doubt that scientists have fully figured out exactly what has been unleashed with the Internet, in general; I know this - the technology companies have figured out how to manipulate us, so that we will spend plenty of time on line.
I saw something from a senior executive from Facebook (?) who stated after leaving the company something along the lines of "we had no idea what we invented with the "like buton" but once we figured it out that this button manipulated people to serve our needs, we cashed in on it." We are all being manipulated.
Scientists are thinking that on line activities are pumping out dopamine, the same neuro chemical realized from drugs like cocaine for instance.
For myself, I'm convinced that I am self medicating with all my time on line.
Now, at the risk of being a hypocrite, try and set up a set time every day where you allow yourself to play - one hour, two hours, whatever. And, stick to it. Maybe, use a timer every day so when the timer goes off you immediately stop playing, even if you are ten minutes from breaking your all time score......just stop
Don't deprive yourself completely since you enjoy it.