Your rate is the speed that data is transferred between you and the server.? The default is 20000, and yours is set at 1500, which is why you were getting lag even yesterday when your ping was OK.? There's a file called config.cfg in your program files\valve\steamapps\<username>\cstrike\cfg folder.? In that file, look for a line that says "cl_rate" and change the 1500 to 20000.? I'm not sure why your ping was high today.