diff --git a/sdgb-cli/src/commands.rs b/sdgb-cli/src/commands.rs
index fa3ccca..9c8a40f 100644
--- a/sdgb-cli/src/commands.rs
+++ b/sdgb-cli/src/commands.rs
@@ -41,7 +41,10 @@ pub enum Commands {
         user_id: u32,
     },
 
-    ListAllUser,
+    ListAllUser {
+        #[arg(short, long, default_value_t = 5)]
+        concurrency: usize,
+    },
 
     Logout {
         #[arg(short, long)]
diff --git a/sdgb-cli/src/main.rs b/sdgb-cli/src/main.rs
index 8e7d401..1727ad6 100644
--- a/sdgb-cli/src/main.rs
+++ b/sdgb-cli/src/main.rs
@@ -49,12 +49,12 @@ async fn main() -> Result<(), Box<dyn snafu::Error>> {
         EARLY_QUIT.store(true, Ordering::Relaxed);
     })?;
 
-    let cmd = <Cli as Parser>::parse();
+    let Cli { command  } = <Cli as Parser>::parse();
 
     let client = ClientBuilder::default().build_async().await?;
 
     // TODO: refactor via enum_dispatch
-    match cmd.command {
+    match command {
         commands::Commands::Logout { user_id } => {
             let logout: UserLogoutApiResp = Sdgb1_50::request(
                 &client,
@@ -108,7 +108,7 @@ async fn main() -> Result<(), Box<dyn snafu::Error>> {
             println!("{}", String::from_utf8_lossy(&resp));
         }
 
-        commands::Commands::ListAllUser => {
+        commands::Commands::ListAllUser { concurrency } => {
             let mut stdin = io::stdin().lock();
             let mut buf = String::new();
             let mut user_ids = Vec::new();
@@ -135,10 +135,6 @@ async fn main() -> Result<(), Box<dyn snafu::Error>> {
 
             let players = futures_util::stream::iter(user_ids)
                 .map(async |user_id| {
-                    if EARLY_QUIT.load(Ordering::Relaxed) {
-                        return Err("early skip due to ctrl-c")?;
-                    }
-
                     #[cfg(feature = "cache")]
                     {
                         use redb::ReadableTable;
@@ -154,6 +150,10 @@ async fn main() -> Result<(), Box<dyn snafu::Error>> {
                         }
                     }
 
+                    if EARLY_QUIT.load(Ordering::Relaxed) {
+                        return Err("early skip due to ctrl-c")?;
+                    }
+
                     let resp = Sdgb1_50::request::<_, GetUserPreviewApiResp>(
                         &client,
                         APIMethod::GetUserPreviewApi,
@@ -187,7 +187,7 @@ async fn main() -> Result<(), Box<dyn snafu::Error>> {
 
                     Result::<_, Box<dyn snafu::Error>>::Ok(resp?)
                 })
-                .buffer_unordered(20)
+                .buffer_unordered(concurrency) // slower to avoid being banned
                 .filter_map(async |r| r.ok())
                 .collect::<Vec<_>>()
                 .await;