Thanks for the Answer Bison.
Im refering to the 2nd graph actually of the popular maps 2 server notice how the blue line is at its highest point (48/48 the server max) right before the Oct 28th 12:00 Am mark(in bold)
and how the yellow fps line drops well below the blue line at exact moment, and as the server decreases to roughly 40 people by 12:00 Am how the fps line goes back up.
Actually yes most of the people have noticed the server lag really hard on Port, which is the only even occasionally played of the two maps.