@Javier, First of all I use latest BETA version of ONE as I found it works better than a release version (for example I had a trouble placing VIX trades from ONE v1 - needed to switch to IB chains for this).
Next, I configured ONE to show only one expiration cycle at a time:
This way it is easier for ONE to meet IB's max number of realtime lines requirements. So ONE works much more stable with only one chain in GUI.
Finally, no, I do not now use Monitor Grid and Monitor Dock features, mostly because when I have a large number of positions opened, these features tend to quickly exhaust "IB max realtime lines" and start working incorrectly, so I need to restart ONE and TWS datafeed to fix it. I decided it is easier to just watch at "UNRLZD P&L" column on TWS Portfolio page. This works well for simple SO setups.