I was playing in a casual match and decided to tab out of TF2 to do something real quick, when I opened TF2 back every player on the server was marked as cheater. I am 60% sure this is caused by the fact that TF2's FPS lowers to 30 or more to save power and energy when you are ALT-Tabbing. Low FPS causes the lua to think that a person is using fakelag or anything basically, and it marks the player as a cheater, which is happening to all players on the server.
I was playing in a casual match and decided to tab out of TF2 to do something real quick, when I opened TF2 back every player on the server was marked as cheater. I am 60% sure this is caused by the fact that TF2's FPS lowers to 30 or more to save power and energy when you are ALT-Tabbing. Low FPS causes the lua to think that a person is using fakelag or anything basically, and it marks the player as a cheater, which is happening to all players on the server.