How to say "I got disconnected" and "I'm lagging"?
"掉线了“ means "I got disconnected" in Chinese,the pronunciation is "diao xian le", and "掉了” in short.
As for "I'm lagging", you can say "网络很卡“，the pronunciation is "wang luo hen ka". Usually a Chinese guy can also easily get your meaning if you express it in "卡”.