Not realy specific to this game or publisher, but i wonder if people don't expect a bit too much from reporting cheaters, like "oh noes I reported hilm like 35 secs ago and he is still playing, they don't do anything against cheaters" a lot of...
Average CPU usage does not mean much, you can have 2 cores doing nothing, one at 50% and 1 struggling at 100%. I don't know how this game is coded, but foir the longest time for instance world of warcraft was limited to 1 thread for the main game...