Just tried here twenty times in a row with the latest COD patch to make sure that didn’t change anything. Not a single failure.
Just to be sure: Did you try some basic trouble shooting stuff: rebooting Windows, reinstalling vorpX, disabling virus scanner/steam overlay etc.? Not sure whether that really helps of course, but it’s always worth a try.
Also: What OS are you on? That might also have an influence (although it shouldn’t in most cases).