diff --git a/Cargo.lock b/Cargo.lock
index 1fff9cc..338bd9c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -632,40 +632,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "crossbeam-channel"
-version = "0.5.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a33c2bf77f2df06183c3aa30d1e96c0695a313d4f9c453cc3762a6db39f99200"
-dependencies = [
- "cfg-if",
- "crossbeam-utils",
-]
-
-[[package]]
-name = "crossbeam-deque"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce6fd6f855243022dcecf8702fef0c297d4338e226845fe067f6341ad9fa0cef"
-dependencies = [
- "cfg-if",
- "crossbeam-epoch",
- "crossbeam-utils",
-]
-
-[[package]]
-name = "crossbeam-epoch"
-version = "0.9.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae211234986c545741a7dc064309f67ee1e5ad243d0e48335adc0484d960bcc7"
-dependencies = [
- "autocfg",
- "cfg-if",
- "crossbeam-utils",
- "memoffset 0.9.0",
- "scopeguard",
-]
-
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.16"
@@ -809,12 +775,6 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "either"
-version = "1.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
-
 [[package]]
 name = "emath"
 version = "0.22.0"
@@ -935,7 +895,6 @@ version = "0.1.0"
 dependencies = [
  "eframe",
  "linuxvideo",
- "rayon",
  "thiserror",
  "tokio",
  "zune-core",
@@ -1396,15 +1355,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "memoffset"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
@@ -1854,28 +1804,6 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2ff9a1f06a88b01621b7ae906ef0211290d1c8a168a15542486a8f61c0833b9"
 
-[[package]]
-name = "rayon"
-version = "1.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d2df5196e37bcc87abebc0053e20787d73847bb33134a69841207dd0a47f03b"
-dependencies = [
- "either",
- "rayon-core",
-]
-
-[[package]]
-name = "rayon-core"
-version = "1.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b8f95bd6966f5c87776639160a66bd8ab9895d9d4ab01ddba9fc60661aebe8d"
-dependencies = [
- "crossbeam-channel",
- "crossbeam-deque",
- "crossbeam-utils",
- "num_cpus",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.3.5"
diff --git a/Cargo.toml b/Cargo.toml
index abbb030..e6918ea 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,6 @@ edition = "2021"
 [dependencies]
 eframe = "0.22.0"
 linuxvideo = { path = "deps/LinuxVideo" }
-rayon = "1.7.0"
 thiserror = "1.0.48"
 tokio = { version = "1.32.0", features = ["full"] }
 zune-core = { path = "deps/zune-image/zune-core" }
diff --git a/src/driver.rs b/src/driver.rs
index 0ce9af1..fc8d5f7 100644
--- a/src/driver.rs
+++ b/src/driver.rs
@@ -30,7 +30,7 @@ pub enum MsgToDriver
 
 pub enum MsgToGui
 {
-    NewRgbaFrame (RgbaFrame),
+    NewRgbaFrame ((RgbaFrame, Instant)),
 }
 
 pub struct Driver
@@ -101,7 +101,7 @@ impl Driver
                 {
                     MsgFromController::RepaintGui (rgba_frame) =>
                     {
-                        self.send_to_gui.send (MsgToGui::NewRgbaFrame (rgba_frame)).await.ok ();
+                        self.send_to_gui.send (MsgToGui::NewRgbaFrame ((rgba_frame, Instant::now ()))).await.ok ();
                         self.gui_ctx.request_repaint();
                     },
                     MsgFromController::StartJpegDecoder (jpeg_frame) =>
@@ -143,7 +143,10 @@ impl Driver
                         tokio::task::spawn_blocking (move ||
                         {
                             let mut data = vec! [0u8; capture.size_image()];
-                            capture.wait_for_frame(&mut data).unwrap ();
+                            
+                            let len = capture.wait_for_frame(&mut data).unwrap ();
+                            
+                            data.resize (len, 0u8);
                             
                             let frame = JpegFrame
                             {
diff --git a/src/main.rs b/src/main.rs
index e63bd25..84dbd32 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -120,10 +120,10 @@ impl eframe::App for App {
             {
                 match msg
                 {
-                    MsgToGui::NewRgbaFrame (frame) =>
+                    MsgToGui::NewRgbaFrame ((frame, _present_time)) =>
                     {
                         texture.set (egui::ColorImage::from_rgba_premultiplied([1280,720], &frame.data), Default::default ());
-                        self.latency = Instant::now () - frame.capture_time;
+                        self.latency = std::cmp::max (self.latency, Instant::now () - frame.capture_time);
                         self.camera_frames += 1;
                         // println! ("     Camera");
                     },
@@ -139,10 +139,11 @@ impl eframe::App for App {
                 self.camera_fps = self.camera_frames;
                 self.gui_frames = 0;
                 self.camera_frames = 0;
+                self.latency = Duration::default ();
                 self.next_stat_refresh += Duration::from_secs(1);
             }
             
-            ui.heading (format! ("{0}, {1}, {2}", self.camera_fps, self.gui_fps, self.latency.as_millis ()));
+            ui.heading (format! ("{0}, latency {1} ms", self.camera_fps, self.latency.as_millis ()));
             let available = ui.available_size() - egui::Vec2::new (0.0, 20.0);
             let tex_size = egui::Vec2::new (texture.size()[0] as f32, texture.size()[1] as f32);
             let scaled_width = available.y * tex_size.x / tex_size.y;
@@ -162,8 +163,6 @@ impl eframe::App for App {
             // println! ("GUI");
             
             ui.checkbox(&mut self.requesting_frames, "Run");
-            
-            // driver::sleep_ms (500);
         });
     }
 }