diff --git a/src/core/hle/service/kernel_helpers.cpp b/src/core/hle/service/kernel_helpers.cpp
index 04b01a5..78b2138 100644
--- a/src/core/hle/service/kernel_helpers.cpp
+++ b/src/core/hle/service/kernel_helpers.cpp
@@ -14,7 +14,7 @@
 namespace Service::KernelHelpers {
 
 ServiceContext::ServiceContext(Core::System& system_, std::string name_)
-    : kernel(system_.Kernel()) {
+    : m_system(system_), kernel(system_.Kernel()) {
     if (process = Kernel::GetCurrentProcessPointer(kernel); process != nullptr) {
         return;
     }
diff --git a/src/core/hle/service/kernel_helpers.h b/src/core/hle/service/kernel_helpers.h
index bf2471c..9015221 100644
--- a/src/core/hle/service/kernel_helpers.h
+++ b/src/core/hle/service/kernel_helpers.h
@@ -26,6 +26,8 @@ public:
 
     void CloseEvent(Kernel::KEvent* event);
 
+    Core::System& m_system;
+
 private:
     Kernel::KernelCore& kernel;
     Kernel::KProcess* process{};
diff --git a/src/core/hle/service/nvnflinger/buffer_queue_consumer.cpp b/src/core/hle/service/nvnflinger/buffer_queue_consumer.cpp
index fd5b6ad..70670f9 100644
--- a/src/core/hle/service/nvnflinger/buffer_queue_consumer.cpp
+++ b/src/core/hle/service/nvnflinger/buffer_queue_consumer.cpp
@@ -11,6 +11,7 @@
 #include "core/hle/service/nvnflinger/buffer_queue_core.h"
 #include "core/hle/service/nvnflinger/parcel.h"
 #include "core/hle/service/nvnflinger/producer_listener.h"
+#include "core/hle/service/time/clock_types.h"
 
 namespace Service::android {
 
@@ -104,7 +105,7 @@ Status BufferQueueConsumer::AcquireBuffer(BufferItem* out_buffer,
 
         const auto target_frame_number = slots[slot].frame_number;
         for (int i = 0; i < core->history.size(); i++) {
-            if (core->history[i].frame_number = target_frame_number) {
+            if (core->history[i].frame_number == target_frame_number) {
                 core->history[i].state = BufferState::Acquired;
                 break;
             }
@@ -263,14 +264,28 @@ Status BufferQueueConsumer::GetReleasedBuffers(u64* out_slot_mask) {
     return Status::NoError;
 }
 
-/* SetPresentTime
-for (int i = 0; i < core->history.size(); i++) {
-    if (core->history[i].frame_number = target_frame_number) {
-        core->history[i].state == BufferState::Acquired;
-        break;
+Status BufferQueueConsumer::SetPresentTime(s32 slot, u64 frame_number,
+                                           Time::Clock::TimeSpanType presentation_time) {
+    if (slot < 0 || slot >= slots.size())
+        return Status::BadValue;
+
+    std::scoped_lock lock{core->mutex};
+
+    if (slots[slot].frame_number != frame_number)
+        return Status::StaleBufferSlot;
+
+    if (slots[slot].presentation_time.nanoseconds == 0)
+        slots[slot].presentation_time = presentation_time;
+
+    for (int i = 0; i < core->history.size(); i++) {
+        if (core->history[i].frame_number == frame_number) {
+            core->history[i].presentation_time = presentation_time;
+            break;
+        }
     }
+
+    return Status::NoError;
 }
-*/
 
 void BufferQueueConsumer::Transact(u32 code, std::span<const u8> parcel_data,
                                    std::span<u8> parcel_reply, u32 flags) {
@@ -328,6 +343,15 @@ void BufferQueueConsumer::Transact(u32 code, std::span<const u8> parcel_data,
         parcel_out.Write(slot_mask);
         break;
     }
+    case TransactionId::SetTransformHint: {
+        std::scoped_lock lock{core->mutex};
+
+        const u32 transform_hint = parcel_in.Read<u32>();
+        LOG_WARNING(Service_Nvnflinger, "Transact::SetTransformHint={}", transform_hint);
+        status = Status::NoError;
+        parcel_out.Write<u32>(transform_hint);
+        break;
+    }
     default:
         ASSERT_MSG(false, "called, code={} flags={}", code, flags);
         break;
diff --git a/src/core/hle/service/nvnflinger/buffer_queue_consumer.h b/src/core/hle/service/nvnflinger/buffer_queue_consumer.h
index 7fea9ad..bf74412 100644
--- a/src/core/hle/service/nvnflinger/buffer_queue_consumer.h
+++ b/src/core/hle/service/nvnflinger/buffer_queue_consumer.h
@@ -14,6 +14,14 @@
 #include "core/hle/service/nvnflinger/buffer_queue_defs.h"
 #include "core/hle/service/nvnflinger/status.h"
 
+namespace Service {
+namespace Time {
+namespace Clock {
+struct TimeSpanType;
+} // namespace Clock
+} // namespace Time
+} // namespace Service
+
 namespace Service::android {
 
 class BufferItem;
@@ -30,6 +38,7 @@ public:
     Status Connect(std::shared_ptr<IConsumerListener> consumer_listener, bool controlled_by_app);
     Status Disconnect();
     Status GetReleasedBuffers(u64* out_slot_mask);
+    Status SetPresentTime(s32 slot, u64 frame_number, Time::Clock::TimeSpanType presentation_time);
 
     void Transact(u32 code, std::span<const u8> parcel_data, std::span<u8> parcel_reply,
                   u32 flags) override;
diff --git a/src/core/hle/service/nvnflinger/buffer_queue_core.h b/src/core/hle/service/nvnflinger/buffer_queue_core.h
index 669166d..d17ceaf 100644
--- a/src/core/hle/service/nvnflinger/buffer_queue_core.h
+++ b/src/core/hle/service/nvnflinger/buffer_queue_core.h
@@ -18,6 +18,7 @@
 #include "core/hle/service/nvnflinger/pixel_format.h"
 #include "core/hle/service/nvnflinger/status.h"
 #include "core/hle/service/nvnflinger/window.h"
+#include "core/hle/service/time/clock_types.h"
 
 namespace Service::android {
 
@@ -76,7 +77,7 @@ private:
     class BufferInfo final {
     public:
         u64 frame_number{};
-        s64 queue_time{}, presentation_time{};
+        Time::Clock::TimeSpanType queue_time, presentation_time;
         BufferState state{BufferState::Free};
     };
 
diff --git a/src/core/hle/service/nvnflinger/buffer_queue_producer.cpp b/src/core/hle/service/nvnflinger/buffer_queue_producer.cpp
index 0f8009d..900c6ff 100644
--- a/src/core/hle/service/nvnflinger/buffer_queue_producer.cpp
+++ b/src/core/hle/service/nvnflinger/buffer_queue_producer.cpp
@@ -6,6 +6,7 @@
 
 #include "common/assert.h"
 #include "common/logging/log.h"
+#include "core/core_timing.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/kernel.h"
@@ -16,6 +17,7 @@
 #include "core/hle/service/nvnflinger/parcel.h"
 #include "core/hle/service/nvnflinger/ui/graphic_buffer.h"
 #include "core/hle/service/nvnflinger/window.h"
+#include "core/hle/service/time/clock_types.h"
 
 namespace Service::android {
 
@@ -278,6 +280,9 @@ Status BufferQueueProducer::DequeueBuffer(s32* out_slot, Fence* out_fence, bool
             return_flags |= Status::BufferNeedsReallocation;
         }
 
+        slots[found].queue_time = Time::Clock::TimeSpanType::FromSeconds(0);
+        slots[found].presentation_time = Time::Clock::TimeSpanType::FromSeconds(0);
+
         *out_fence = slots[found].fence;
         slots[found].fence = Fence::NoFence();
     }
@@ -508,12 +513,17 @@ Status BufferQueueProducer::QueueBuffer(s32 slot, const QueueBufferInput& input,
             return Status::BadValue;
         }
 
+        auto& ctx = service_context;
+        auto& system = ctx.m_system;
+
         slots[slot].fence = fence;
         slots[slot].buffer_state = BufferState::Queued;
         ++core->frame_counter;
         slots[slot].frame_number = core->frame_counter;
-        slots[slot].queue_time = 0;        // this is not the true value
-        slots[slot].presentation_time = 0; // doesn't need to be set afaik but do it anyway
+        slots[slot].queue_time = Time::Clock::TimeSpanType::FromTicks<Core::Hardware::CNTFREQ>(
+            system.CoreTiming().GetClockTicks()); // this is not the true value
+        slots[slot].presentation_time = Time::Clock::TimeSpanType::FromSeconds(
+            0); // doesn't need to be set afaik but do it anyway
 
         item.acquire_called = slots[slot].acquire_called;
         item.graphic_buffer = slots[slot].graphic_buffer;
@@ -569,7 +579,12 @@ Status BufferQueueProducer::QueueBuffer(s32 slot, const QueueBufferInput& input,
         core->buffer_has_been_queued = true;
         core->SignalDequeueCondition();
         output->Inflate(core->default_width, core->default_height, core->transform_hint,
-                        static_cast<u32>(core->queue.size()));
+                        static_cast<u32>(core->queue.size()), core->frame_counter);
+
+        if ((sticky_transform & 8) != 0) {
+            output->transform_hint |= (u32)NativeWindowTransform::ReturnFrameNumber;
+            output->frame_number = slots[slot].frame_number;
+        }
 
         // Take a ticket for the callback functions
         callback_ticket = next_callback_ticket++;
@@ -670,7 +685,7 @@ Status BufferQueueProducer::Query(NativeWindow what, s32* out_value) {
         return Status::BadValue;
     }
 
-    LOG_DEBUG(Service_Nvnflinger, "what = {}, value = {}", what, value);
+    LOG_WARNING(Service_Nvnflinger, "what = {}, value = {}", what, value);
 
     *out_value = static_cast<s32>(value);
 
@@ -714,7 +729,7 @@ Status BufferQueueProducer::Connect(const std::shared_ptr<IProducerListener>& li
     case NativeWindowApi::Camera:
         core->connected_api = api;
         output->Inflate(core->default_width, core->default_height, core->transform_hint,
-                        static_cast<u32>(core->queue.size()));
+                        static_cast<u32>(core->queue.size()), core->frame_counter);
         core->connected_producer_listener = listener;
         break;
     default:
@@ -849,7 +864,12 @@ void BufferQueueProducer::Transact(u32 code, std::span<const u8> parcel_data,
 
         status = Connect(listener, api, producer_controlled_by_app, &output);
 
+        LOG_WARNING(Service_Nvnflinger, "Connect, output.frame_number={}, output.transform_hint={}",
+                    output.frame_number, output.transform_hint);
+
         parcel_out.Write(output);
+        if (output.transform_hint & (u32)NativeWindowTransform::ReturnFrameNumber)
+            parcel_out.Write<u64>(output.frame_number);
         break;
     }
     case TransactionId::SetPreallocatedBuffer: {
@@ -892,8 +912,13 @@ void BufferQueueProducer::Transact(u32 code, std::span<const u8> parcel_data,
         QueueBufferOutput output;
 
         status = QueueBuffer(slot, input, &output);
+        LOG_WARNING(Service_Nvnflinger,
+                    "QueueBuffer, output.frame_number={}, output.transform_hint={}",
+                    output.frame_number, output.transform_hint);
 
         parcel_out.Write(output);
+        if (output.transform_hint & (u32)NativeWindowTransform::ReturnFrameNumber)
+            parcel_out.Write<u64>(output.frame_number);
         break;
     }
     case TransactionId::Query: {
@@ -948,6 +973,7 @@ void BufferQueueProducer::Transact(u32 code, std::span<const u8> parcel_data,
             pos--;
         }
 
+        parcel_out.Write<s32>(buffer_history_count);
         parcel_out.WriteFlattenedObject<BufferQueueCore::BufferInfo>(info);
         status = Status::NoError;
 
diff --git a/src/core/hle/service/nvnflinger/buffer_slot.h b/src/core/hle/service/nvnflinger/buffer_slot.h
index 3f69181..77dae2a 100644
--- a/src/core/hle/service/nvnflinger/buffer_slot.h
+++ b/src/core/hle/service/nvnflinger/buffer_slot.h
@@ -10,6 +10,7 @@
 
 #include "common/common_types.h"
 #include "core/hle/service/nvnflinger/ui/fence.h"
+#include "core/hle/service/time/clock_types.h"
 
 namespace Service::android {
 
@@ -35,7 +36,7 @@ struct BufferSlot final {
     bool attached_by_consumer{};
     bool is_preallocated{};
 
-    s64 queue_time{}, presentation_time{};
+    Time::Clock::TimeSpanType queue_time, presentation_time;
 };
 
 } // namespace Service::android
diff --git a/src/core/hle/service/nvnflinger/graphic_buffer_producer.h b/src/core/hle/service/nvnflinger/graphic_buffer_producer.h
index 86080e1..d5f2578 100644
--- a/src/core/hle/service/nvnflinger/graphic_buffer_producer.h
+++ b/src/core/hle/service/nvnflinger/graphic_buffer_producer.h
@@ -51,26 +51,31 @@ static_assert(sizeof(QueueBufferInput) == 84, "QueueBufferInput has wrong size")
 struct QueueBufferOutput final {
     QueueBufferOutput();
 
-    void Deflate(u32* width_, u32* height_, u32* transform_hint_, u32* num_pending_buffers_) const {
+    void Deflate(u32* width_, u32* height_, u32* transform_hint_, u32* num_pending_buffers_,
+                 u64* frame_number_) const {
         *width_ = width;
         *height_ = height;
         *transform_hint_ = transform_hint;
         *num_pending_buffers_ = num_pending_buffers;
+        *frame_number_ = frame_number;
     }
 
-    void Inflate(u32 width_, u32 height_, u32 transform_hint_, u32 num_pending_buffers_) {
+    void Inflate(u32 width_, u32 height_, u32 transform_hint_, u32 num_pending_buffers_,
+                 u64 frame_number_) {
         width = width_;
         height = height_;
         transform_hint = transform_hint_;
         num_pending_buffers = num_pending_buffers_;
+        frame_number = frame_number_;
     }
 
-private:
+public:
     u32 width{};
     u32 height{};
     u32 transform_hint{};
     u32 num_pending_buffers{};
+    u64 frame_number{};
 };
-static_assert(sizeof(QueueBufferOutput) == 16, "QueueBufferOutput has wrong size");
+static_assert(sizeof(QueueBufferOutput) == 24, "QueueBufferOutput has wrong size");
 
 } // namespace Service::android
diff --git a/src/core/hle/service/nvnflinger/window.h b/src/core/hle/service/nvnflinger/window.h
index a5fc7d7..755d6a6 100644
--- a/src/core/hle/service/nvnflinger/window.h
+++ b/src/core/hle/service/nvnflinger/window.h
@@ -48,6 +48,7 @@ enum class NativeWindowScalingMode : s32 {
 enum class NativeWindowTransform : u32 {
     None = 0x0,
     InverseDisplay = 0x08,
+    ReturnFrameNumber = 0x20
 };
 DECLARE_ENUM_FLAG_OPERATORS(NativeWindowTransform);