After DayZ Update 1.10, Brazilian official servers are experiencing many connection problems. Lag happens all the time, with some peaks for more and for less. It is really hard to play like this...
I tested on the servers BR 4-001, BR 4-002 and BR 4-003, all presented the same problem (the 3 are hosted by Fragnet.net).
It's definitely not my internet, I tested it on North American servers with 150ms ping and it didn't lag. I usually play other games and none have connection problems. In addition, my friends are also experiencing this problem.
In the video below you can see my internet test, server ping and lag.
(Recorded Sunday, 11/29/2020 at 2:30 pm)
Edit: In fact, it doesn't happen all the time. I believe it can only be on days and times with more flow of players, such as night on weekdays or afternoon and night on weekends.