Anticheat updated recently
A few days ago right before the new update a small patch has appeared on live servers - a 2.2 GB update that has only consisted new anticheat measures, hopefully it would help to improve the situations with the cheaters, because radar is still an issue and can't be detected by the devs if configured properly.
PC Players: A new 2.2GB patch has been released for Live Servers. The purpose of this is to update our anti-cheat measures. No downtime required. Patch is now available to download via Steam.— PUBG Help (@PUBG_help) April 26, 2018