Hello Gabiscriba,
> … regardless of whether the news filter is disabled/enabled.
The News Filter accesses news information for the current and future days. It does not have data for past events. For that reason, it is used only during live trading.
The News Filter does not affect the backtesting performance of the robots.
> After all these tests, I am inclined to believe that during a whole year it is much simpler to permanently use all 8 robots at the same time.
The robots have different performances on unknown data. It is probably wiser to test them on a demo and to see which one works best in the current market conditions.