diff --git a/apps/nescope/src/handlers.rs b/apps/nescope/src/handlers.rs
index 08415e58..2a0d341e 100644
--- a/apps/nescope/src/handlers.rs
+++ b/apps/nescope/src/handlers.rs
@@ -115,7 +115,7 @@ impl CompositorHandler for NescopeState {
 
         window.on_commit();
         self.game_frame_count += 1;
-        self.on_surface_committed(&root, &window);
+        self.present_now(&root, &window);
     }
 
     fn destroyed(&mut self, surface: &WlSurface) {
diff --git a/apps/nescope/src/main.rs b/apps/nescope/src/main.rs
index 0d1a4785..6256354e 100644
--- a/apps/nescope/src/main.rs
+++ b/apps/nescope/src/main.rs
@@ -416,16 +416,10 @@ fn main() {
     }
 
     // ── Input dispatch timer ────────────────────────────────────────────────
-    // Just input and cursor. High rate so a 1000 Hz mouse isn't coalesced;
+    // Just input and cursor. High rate so a 500 Hz (2 ms) mouse isn't coalesced;
     // cursor piggybacks on the same tick because it is change-gated
     // internally and costs nothing when idle.
-    //
-    // There is deliberately no frame-callback timer. Frame callbacks and
-    // presentation feedback are driven by commits — see
-    // NescopeState::on_surface_committed. A timer at any rate would pace
-    // the client against something other than its own submit loop, which
-    // is what produces the periodic hitches.
-    let tick_interval = Duration::from_millis(1);
+    let tick_interval = Duration::from_millis(2);
     loop_handle
         .insert_source(Timer::from_duration(tick_interval), move |_, _, data| {
             if let Some(ref mut li) = data.libinput {
diff --git a/apps/nescope/src/state.rs b/apps/nescope/src/state.rs
index 9d9fa61e..b3d13fb6 100644
--- a/apps/nescope/src/state.rs
+++ b/apps/nescope/src/state.rs
@@ -190,6 +190,8 @@ pub struct NescopeState {
     /// Timestamp of the last non-keyboard pointer event (for inactivity hiding).
     pub last_pointer_activity: std::time::Instant,
 
+    pub presentation_seq: u64,
+
     // ── Dimensions + frame rate ───────────────────────────────────────────
     pub width: u32,
     pub height: u32,
@@ -323,6 +325,7 @@ impl NescopeState {
             last_sent_cursor_pos: Point::from((-1.0f64, -1.0f64)),
             last_sent_cursor_status: 0xFF,
             last_pointer_activity: std::time::Instant::now(),
+            presentation_seq: 0,
             width,
             height,
             fps,
@@ -732,55 +735,25 @@ impl NescopeState {
         }
     }
 
-    // -----------------------------------------------------------------------
-    // Commit-driven frame signals
-    //
-    // Called from CompositorHandler::commit for every non-sync commit that
-    // belongs to a mapped window. Fires the wl_surface.frame callbacks the
-    // client asked for and resolves the wp_presentation_feedback for the
-    // frame that just arrived.
-    //
-    // NOT driven by a timer. A frame callback means "the compositor is ready
-    // for your next frame"; for a headless capture compositor that is true
-    // the moment the commit lands, because there is no renderer and no
-    // scan-out between us and the client. A timer at any rate decouples the
-    // client's submit loop from the signal it is pacing itself with — too
-    // early for a slow client (over-submits), too late for a fast one
-    // (throttles), and when the two rates are close but not equal the phase
-    // slips and produces periodic hitches. The client's own rate is the
-    // correct rate; that is the whole point of the callback.
-    // -----------------------------------------------------------------------
-
-    pub(crate) fn on_surface_committed(&mut self, root: &WlSurface, window: &Window) {
+    pub(crate) fn present_now(&mut self, root: &WlSurface, window: &Window) {
         let output = self.output.clone();
         let now = self.clock.now();
+        self.presentation_seq += 1;
 
-        // Frame callbacks for the whole tree. `None` throttle: no minimum
-        // interval — the client decides its own cadence, we answer every
-        // frame it hands us.
-        send_frames_surface_tree(root, &output, now, None, |_, _| Some(output.clone()));
-
-        // Presentation feedback for the same frame, resolved as `presented`
-        // immediately. `discarded` is the wrong resolution here: it means
-        // "the next frame superseded this one before it reached the
-        // display," which is not what happened — this frame is the one the
-        // capture layer will see, and the client that waits on it (Vulkan
-        // FIFO present, VKD3D-Proton, DXVK) is waiting precisely for this.
-        let mut feedback = OutputPresentationFeedback::new(&output);
+        let mut fb = OutputPresentationFeedback::new(&output);
         window.take_presentation_feedback(
-            &mut feedback,
+            &mut fb,
             |_, _| Some(output.clone()),
             |_, _| wp_presentation_feedback::Kind::Vsync,
         );
-        feedback.presented(
+        fb.presented(
             now,
-            output
-                .current_mode()
-                .map(|m| Refresh::fixed(Duration::from_secs_f64(1_000.0 / m.refresh as f64)))
-                .unwrap_or(Refresh::Unknown),
-            0,
+            Refresh::Unknown,
+            self.presentation_seq,
             wp_presentation_feedback::Kind::Vsync,
         );
+
+        send_frames_surface_tree(root, &output, now, None, |_, _| Some(output.clone()));
     }
 
     pub(crate) fn send_cursor_update(&mut self) {
diff --git a/build/Containerfile b/build/Containerfile
index a5bd6bc3..ae939881 100644
--- a/build/Containerfile
+++ b/build/Containerfile
@@ -45,7 +45,7 @@ RUN pacman -Syu --noconfirm
 
 FROM initial AS builder
 RUN pacman -S --noconfirm --needed \
-        cmake meson ninja git pkgconf \
+        cmake meson ninja git pkgconf mold \
         python python-mako python-yaml python-packaging python-ply \
         bison flex \
         libpciaccess libepoxy libglvnd \
@@ -64,6 +64,7 @@ RUN pacman -S --noconfirm --needed \
     && pacman -Scc --noconfirm
 WORKDIR /build
 ENV ARTIFACTS=/artifacts
+ENV RUSTFLAGS="-C link-arg=-fuse-ld=mold"
 
 
 # ───────────────────────────────────────────────────────────
@@ -72,7 +73,7 @@ ENV ARTIFACTS=/artifacts
 FROM builder AS mesa-build
 
 ARG MESA_GIT=https://gitlab.freedesktop.org/nowrep/mesa.git
-ARG MESA_COMMIT=1af89bea491deabc4741700f8df4d41edfd22f7a
+ARG MESA_COMMIT=49162a0ba8f3647917bc4c94d13eea6b51a1e49f
 ARG JOBS=
 
 # Our patches to the amdgpu native-context path, applied on top of the pinned
@@ -101,7 +102,7 @@ RUN test -n "$JOBS" || JOBS=$(nproc) && \
         -Dgbm=disabled \
         -Dgallium-va=disabled \
         -Db_ndebug=true && \
-    ninja -C builddir -j${JOBS:-$(nproc)} && \
+    mold -run ninja -C builddir -j${JOBS:-$(nproc)} && \
     DESTDIR=/artifacts/mesa ninja -C builddir install && \
     rm -rf /build/mesa-src && \
     find /artifacts/mesa -type f -printf '/%P\n' > /artifacts/mesa/.manifest