diff --git a/ipa-core/Cargo.toml b/ipa-core/Cargo.toml
index 7d2216df6..3bc1fd120 100644
--- a/ipa-core/Cargo.toml
+++ b/ipa-core/Cargo.toml
@@ -142,7 +142,7 @@ thiserror = "1.0"
 tikv-jemallocator = { version = "0.6", optional = true, features = ["profiling"] }
 tikv-jemalloc-ctl = { version = "0.6", optional = true, features = ["stats"] }
 time = { version = "0.3", optional = true }
-tiny_http = { version = "0.12", optional = true }
+tiny_http = { path = "../../tiny-http", optional = true }
 tokio = { version = "1.42", features = ["fs", "rt", "rt-multi-thread", "macros"] }
 tokio-rustls = { version = "0.26", optional = true }
 tokio-stream = "0.1.14"
diff --git a/ipa-core/src/bin/test_mpc.rs b/ipa-core/src/bin/test_mpc.rs
index 3735c4c18..fa88102b1 100644
--- a/ipa-core/src/bin/test_mpc.rs
+++ b/ipa-core/src/bin/test_mpc.rs
@@ -6,7 +6,7 @@ use std::{
     net::TcpListener,
     ops::Add,
     os::fd::{FromRawFd, RawFd},
-    path::PathBuf,
+    path::PathBuf, thread,
 };
 
 use clap::{Parser, Subcommand};
@@ -262,23 +262,27 @@ fn serve_input(args: ServeInputArgs) {
         tracing::info!(target: "request_url", "{}", request.url());
 
         let url = request.url()[1..].to_owned();
-        let response = if url.contains('/') {
-            error!(target: "error", "Request URL contains a slash");
-            not_found()
-        } else {
-            match File::open(args.directory.join(&url)) {
-                Ok(file) => Response::from_file(file).boxed(),
-                Err(err) => {
-                    if err.kind() != ErrorKind::NotFound {
-                        error!(target: "error", "{err}");
+        let directory = args.directory.clone();
+
+        thread::spawn(move || {
+            let response = if url.contains('/') {
+                error!(target: "error", "Request URL contains a slash");
+                not_found()
+            } else {
+                match File::open(directory.join(&url)) {
+                    Ok(file) => Response::from_file(file).boxed(),
+                    Err(err) => {
+                        if err.kind() != ErrorKind::NotFound {
+                            error!(target: "error", "{err}");
+                        }
+                        not_found()
                     }
-                    not_found()
                 }
-            }
-        };
+            };
 
-        let _ = request.respond(response).map_err(|err| {
-            error!(target: "error", "{err}");
+            let _ = request.respond(response).map_err(|err| {
+                error!(target: "error", "{err}");
+            });
         });
     }
 }
diff --git a/ipa-core/tests/hybrid.rs b/ipa-core/tests/hybrid.rs
index 50251f8bc..f8f4fbdaa 100644
--- a/ipa-core/tests/hybrid.rs
+++ b/ipa-core/tests/hybrid.rs
@@ -34,8 +34,8 @@ pub const IN_THE_CLEAR_BIN: &str = env!("CARGO_BIN_EXE_in_the_clear");
 
 #[test]
 fn test_hybrid() {
-    const INPUT_SIZE: usize = 100;
-    const SHARDS: usize = 5;
+    const INPUT_SIZE: usize = 50_000;
+    const SHARDS: usize = 2;
     const MAX_CONVERSION_VALUE: usize = 5;
 
     let config = HybridQueryParams {
@@ -149,8 +149,8 @@ fn test_hybrid() {
 
 #[test]
 fn test_hybrid_poll() {
-    const INPUT_SIZE: usize = 100;
-    const SHARDS: usize = 5;
+    const INPUT_SIZE: usize = 50_000;
+    const SHARDS: usize = 2;
     const MAX_CONVERSION_VALUE: usize = 5;
 
     let config = HybridQueryParams {