Theres is this sharp sound, kinda like drawing a sword sound, that would last just a second long. Does it have anything to do with the new agent? Coupled with the invisible footstep in icebox

I play from Finland, sometimes I get an expected 50-60 ping, but half the time my ping is constantly above 100. Just had a game on Paris 2 server where I saw my ping would go as "low" as 85, but also as high as 150 and most of the time was...