I saw in many games people purposely exploiting the game engine to overextend range of weapons.

This is a call to all players to confess to fair gaming and proscript exploiting game engine where ever its happening.

"An exploit (from the English verb to exploit, meaning "to use something to one’s own advantage") is a piece of software, a chunk of data, or a sequence of commands that takes advantage of a bug or vulnerability to cause unintended or unanticipated behavior to occur on computer software"

https://en.wikipedia.org/wiki/Exploit_(computer_security)

At least its nothing else but cheating .

It ♥♥♥♥♥ ups the game, a great if not best tactical game ever... good positions in cover become bad due to that exploit.