CS:GO is the most tragically neglected of the major e-sports. It succeeds due to its source material.
Case in point: Overwatch is neutered. CS:GO competitive servers have a tick rate of 64 (that is, per second), which is already considered too low by many players, given that CS is a twitch shooter. Overwatch halves that tick rate to 32. So - investigators use footage at half the resolution (so to speak) of the actual game. This can both make cases harder to prove and make split-second decisions look like cheating, since half the data is missing.