I wouldn't rank it pretty bad, but it is definitely a problem within the game. All cheaters get eventually banned so it is all in good shit...The games also get cancelled which is nice for your rank, but damage is dealt momentarily.
This isn't the kind of cheaters you are probably thinking off. These are smart cheaters. Some of them on my friend lists had inventories with howl's and knifes (you lose them if you get caught) lol Guys i thought didn't cheat. krynn and fella were the big shock for me...Even though i only played 3/4 matches with them i watched their stream and followed closely their commitment in their semi-pro team. They were 'emilios'.
Anyways don't feel the need to back away from the game, if you get to a level where too many cheaters are in you can always play ESEA / FACEIT / CEVO etc where anti cheat is more sophisticated and cheaters are less abundant.