On the network of ARC Raiders. Due to the lags, it was very difficult for gamers to move around the world, and loot from raids might not be saved. After some time, a representative of Embark Studios reported that the game's servers, as well as those of The Finals, had been subjected to DDoS attacks. Therefore, gamers were asked to be patient and refrain from logging in. Interestingly, the attackers' actions almost coincided with the release of a new update. Whether the problem has been resolved by now is unknown.
We would like to remind you that the creators of ARC Raiders started actively banning cheaters after a scandal involving major streamers. It is possible that the DDoS attack was precisely a kind of "revenge" for the measures taken.