I've encountered a cheater. Here's all needed information:
steamid64: 76561198003704884
server ip: 31.214.136.147:727449600
time: 17:00 ish NT (GMT-2.5)
location: At the farm on the road south from Adamow
date: 25th May, 2020 (Monday)
3 of us were walking south on this road, when we encountered a speed hacker. He was able to zip around and kill all 3 of us very quickly.