Soo my Probelm with the Faceit AC is that it is often very buggy and seems to be active in the background. For example: I just got banned for an Hour because of not being able to start CS:GO because of having the Faceit AC opened. I played the game “Arma 3” once and while playing i got a bluescreen with a massive error message and something with Faceit AC Client even though it wasnt even opened. Also i tried to play the game “Yu-Gi-Oh! Duel Links” which also crashes because of the Faceit AC Client when trying to start the game (You need to download some files ingame to play the game, however it always carshed at the end and i needed to restart it). In that case the program wasnt active as well. Others seem to have that problem as well : https://steamcommunity.com/app/601510/discussions/0/3183345000083787632/ https://steamcommunity.com/app/601510/discussions/0/1489992080505334683/
I would kindly ask you to get in touch with Support team via this link and their dedicated CS team will assist in getting you up and running without any problems.