(Under Tools on the Top Menu)
Here GSB will only show systems in its GUI of >$80 average trade and > $80,000 net profit over all.
Should you use full period filter, you have in effect made all systems in-sample. That's ok as a walk forward test should determine if the system is valid.
I recommend to start using GSB with profit factor 1.2 in the trading period, and allow all other systems (good and bad) to pass. This will mean you get a real picture of what works out of sample, and the ratio of good and bad systems out of sample. For markets that GSB finds it easy to make systems on, IE S&P 500, increasing this to a higher value of 1.5 is good to do. If the PF value is too high, no systems might be produced.