ZED Studio flickers/drops frames on RTX Blackwell GPUs (live + SVO2 playback) — Explorer unaffected

gegardne · June 30, 2026, 5:13pm

I’m getting consistent frame flickering/dropping in ZED Studio and depth viewer on a new desktop with an RTX PRO 4000 Blackwell GPU. ZED Explorer seems to work fine on the same hardware.

System:

GPU: RTX PRO 4000 Blackwell
Driver: 595.71
ZED SDK: 5.4.0
CUDA: 13.3
Windows 10
Cameras tested: ZED X, ZED Mini, ZED 2i — same issue on all three

What’s affected:

Studio: live video preview, depth view, SVO2 playback — all flicker
Happens with plain video preview alone, no depth involved
Happens on SVO2 playback too, no live camera connected at all
Same camera/cable tested on a laptop with a 4080 — clean there. Only happens on this Blackwell desktop, only in Studio.

Ruled out so far:

Uninstalled and reinstalled CUDA toolkit + ZED SDK 5.4.0 together (clean cycle, reboot) — ZED_Diagnostic shows CUDA operations fully healthy, no change in behavior
Depth mode — NEURAL and NEURAL LIGHT both flicker (NEURAL PLUS won’t load, separate issue per diagnostic)
Windowed vs fullscreen — no difference
USB port — tried multiple, bandwidth reports OK
GPU power management settings — no difference
GPU load — Task Manager shows usage rise slightly but not spike, frames seem to be computed fine, problem looks like it’s on the display side

I also wrote a Python script using the SDK directly (no Studio, no Explorer) to grab 450 frames over 15 seconds with NEURAL depth enabled. It showed zero grab errors, zero invalid depth frames, stable depth stats throughout. So the SDK/CUDA capture layer itself is healthy. The bug is isolated to how Studio specifically renders/displays frames.

This is reproducible across multiple camera models Can someone from take a look? Happy to provide the diagnostic JSON, video, or run more tests.

Myzhar · July 1, 2026, 8:58pm

Hi @gegardne
Please record a video showing the bad behavior of ZED Studio and share the content of a ZED Diagnostic report to know more about your setup.

gegardne · July 14, 2026, 6:36pm

Hi, I can’t add attachments as a new forum user, but here is a link to the video https://photos.app.goo.gl/obKTCq7RhFV3QJfY6 and here are the results of the diagnostic. {
“AI Models”: {
“info”: [
“MULTI CLASS MEDIUM DETECTION is not optimized”,
“MULTI CLASS ACCURATE DETECTION is not optimized”,
“HUMAN BODY FAST DETECTION is not optimized”,
“HUMAN BODY MEDIUM DETECTION is not optimized”,
“HUMAN BODY ACCURATE DETECTION is not optimized”,
“HUMAN BODY 38 FAST DETECTION is not optimized”,
“HUMAN BODY 38 MEDIUM DETECTION is not optimized”,
“HUMAN BODY 38 ACCURATE DETECTION is not optimized”,
“PERSON HEAD DETECTION is not optimized”,
“PERSON HEAD ACCURATE DETECTION is not optimized”,
“REID ASSOCIATION is not optimized”,
“NEURAL LIGHT DEPTH is not optimized”,
“NEURAL PLUS DEPTH is not optimized”
],
“valid”: [
“MULTI CLASS DETECTION is optimized”,
“NEURAL DEPTH is optimized”
]
},
“CUDA Operations”: {
“cudaDeviceCount”: 1,
“cudaDriverVersion”: 13020,
“cudaDriverVersionString”: “13.2”,
“cudaGetDeviceCountResult”: 0,
“cudaRuntimeLoaded”: true,
“cudaRuntimeVersion”: 13020,
“cudaRuntimeVersionString”: “13.2”,
“cudaTestVersion”: “1.0”,
“gpuTests”: [
{
“computeCapability”: “12.0”,
“computeCapabilityMajor”: 12,
“computeCapabilityMinor”: 0,
“freeResult”: 0,
“freeSuccess”: true,
“gpuId”: 0,
“gpuName”: “NVIDIA RTX PRO 4000 Blackwell”,
“mallocResult”: 0,
“mallocSuccess”: true,
“memcpyD2HResult”: 0,
“memcpyD2HSuccess”: true,
“memcpyH2DResult”: 0,
“memcpyH2DSuccess”: true,
“memoryBusWidthBits”: 192,
“memsetResult”: 0,
“memsetSuccess”: true,
“multiProcessorCount”: 70,
“pciBusId”: 1,
“pciDeviceId”: 0,
“pciDomainId”: 0,
“setDeviceResult”: 0,
“testElements”: 1048576,
“testPassed”: true,
“testSizeBytes”: 4194304,
“totalGlobalMemMB”: 24466,
“validationPassed”: true
}
],
“testSizeMB”: 1,
“valid”: [
“GPU 0 (NVIDIA RTX PRO 4000 Blackwell): CUDA operations working correctly”
]
},
“Camera Test”: {
“ASMediaFound”: [
],
“CorruptedFirmware”: [
],
“InternalDevicesCount (GMSL)”: [
],
“InternalDevicesCount (USB)”: [
],
“MCUDetected”: [
],
“OC_Cam_Detected”: [
],
“OtherUSBDevices”: [
{
“USBMode”: 3,
“USB_path”: “/21”,
“bDescriptorType”: 1,
“bDeviceProtocol”: 0,
“bLength”: 18,
“bMaxPacketSize0”: 9,
“bNumConfigurations”: 1,
“bcdDevice”: “1.16”,
“bcdUSB”: “3.32”,
“bcdUSBClass”: 0,
“bcdUSBSubClass”: 0,
“busNumber”: 2,
“iManufacturer”: 1,
“iProduct”: 2,
“iSerial”: 3,
“idProduct”: 5734,
“idVendor”: 2385
}
],
“Serial Number”: [
],
“USBList”: [
{
“USB_path”: “/21”,
“idProduct”: “0x1666”,
“idVendor”: “0x0951”
},
{
“USB_path”: “/5”,
“idProduct”: “0x0610”,
“idVendor”: “0x05e3”
},
{
“USB_path”: “/12/1”,
“idProduct”: “0x2512”,
“idVendor”: “0x0424”
},
{
“USB_path”: “/18”,
“idProduct”: “0x0211”,
“idVendor”: “0x2109”
},
{
“USBMode”: 3,
“USB_path”: “/18/1”,
“bDescriptorType”: 1,
“bDeviceProtocol”: 1,
“bLength”: 18,
“bMaxPacketSize0”: 9,
“bNumConfigurations”: 1,
“bcdDevice”: “1.0”,
“bcdUSB”: “3.0”,
“bcdUSBClass”: 239,
“bcdUSBSubClass”: 2,
“busNumber”: 2,
“device”: “ZED2i”,
“iManufacturer”: 1,
“iProduct”: 2,
“iSerial”: 4,
“idProduct”: “0xf880”,
“idVendor”: “0x2b03”
},
{
“USB_path”: “/11”,
“idProduct”: “0x301a”,
“idVendor”: “0x413c”
},
{
“USB_path”: “/11”,
“idProduct”: “0x301a”,
“idVendor”: “0x413c”
},
{
“USB_path”: “/10”,
“idProduct”: “0x2113”,
“idVendor”: “0x413c”
},
{
“USB_path”: “/10”,
“idProduct”: “0x2113”,
“idVendor”: “0x413c”
},
{
“USB_path”: “/12”,
“idProduct”: “0x2211”,
“idVendor”: “0x2109”
},
{
“USBMode”: 2,
“USB_path”: “/12/1/2”,
“bDescriptorType”: 1,
“bDeviceProtocol”: 0,
“bLength”: 18,
“bMaxPacketSize0”: 64,
“bNumConfigurations”: 1,
“bcdDevice”: “3.10”,
“bcdUSB”: “2.0”,
“bcdUSBClass”: 0,
“bcdUSBSubClass”: 0,
“busNumber”: 2,
“device”: “ZED2i MCU”,
“iManufacturer”: 1,
“iProduct”: 2,
“iSerial”: 3,
“idProduct”: “0xf881”,
“idVendor”: “0x2b03”
}
],
“USBMode”: [
],
“ZED Camera Module Detected”: [
],
“ZED MCU Module Detected”: [
],
“ZEDCount”: [
],
“ZEDDetected”: [
],
“ZEDs”: [
],
“camera”: [
],
“captureDevices”: [
],
“controllers”: [
{
“CompatibleIDs”: “USB\USB20_HUB”,
“Description”: “Generic USB Hub”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0006”,
“Location”: “Port_#0005.Hub_#0002”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “\Device\USBPDO-4”
},
{
“CompatibleIDs”: “USB\USB20_HUB”,
“Description”: “Generic USB Hub”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0020”,
“Location”: “Port_#0001.Hub_#0008”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “\Device\USBPDO-2”
},
{
“CompatibleIDs”: “”,
“Description”: “USB Root Hub (USB 3.0)”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0003”,
“Location”: “”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “\Device\USBPDO-0”
},
{
“CompatibleIDs”: “USB\USB30_HUB”,
“Description”: “Generic SuperSpeed USB Hub”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0021”,
“Location”: “Port_#0017.Hub_#0002”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “”
},
{
“CompatibleIDs”: “USB\USB20_HUB”,
“Description”: “Generic USB Hub”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0031”,
“Location”: “Port_#0003.Hub_#0002”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “”
},
{
“CompatibleIDs”: “USB\USB20_HUB”,
“Description”: “Generic USB Hub”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0007”,
“Location”: “Port_#0010.Hub_#0001”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “”
},
{
“CompatibleIDs”: “PCI\VEN_8086&DEV_7EC0&REV_10”,
“Description”: “USB xHCI Compliant Host Controller”,
“DeviceName”: “Intel(R) USB 3.20 eXtensible Host Controller - 1.20 (Microsoft)”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0000”,
“Location”: “PCI bus 0, device 13, function 0”,
“Manufacturer”: “Generic USB xHCI Host Controller”,
“Name”: “PCI”,
“PhysicalName”: “\Device\NTPNP_PCI0010”
},
{
“CompatibleIDs”: “PCI\VEN_8086&DEV_7F6E&REV_10”,
“Description”: “USB xHCI Compliant Host Controller”,
“DeviceName”: “Intel(R) USB 3.20 eXtensible Host Controller - 1.20 (Microsoft)”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0002”,
“Location”: “PCI bus 128, device 20, function 0”,
“Manufacturer”: “Generic USB xHCI Host Controller”,
“Name”: “PCI”,
“PhysicalName”: “\Device\NTPNP_PCI0016”
},
{
“CompatibleIDs”: “”,
“Description”: “USB Root Hub (USB 3.0)”,
“DeviceName”: “”,
“Driver”: “{36fc9e60-c465-11cf-8056-444553540000}\0004”,
“Location”: “”,
“Manufacturer”: “(Standard USB HUBs)”,
“Name”: “USB”,
“PhysicalName”: “\Device\USBPDO-1”
}
],
“resolutions”: [
],
“sensors”: [
],
“valid”: [
“Camera: ZED 2i”,
“USB Bandwidth: OK”,
“USB Bandwidth: OK”
]
},
“Graphics Card”: {
“deviceCount”: 1,
“deviceDriverVersion”: 13020,
“devices”: [
{
“arch”: “Blackwell”,
“computeCapability”: “12.0”,
“cores”: 0,
“name”: “NVIDIA RTX PRO 4000 Blackwell”,
“totalMemoryBytes”: “25655050240”,
“totalMemoryMB”: 24466.5625
}
],
“initResult”: 0,
“valid”: [
“Graphics card: NVIDIA RTX PRO 4000 Blackwell”
]
},
“Processor”: {
“OS”: “Windows 10 FallCreators”,
“avxSupported”: true,
“coreCount”: “20”,
“cpu”: “Intel(R) Core™ Ultra 7 265”,
“datetime”: “2026-07-14 12:35:42”,
“hyperThreading”: “0”,
“motherboard”: ", ",
“ramCapacity”: “31.4558”,
“ramUsage”: “0”,
“ramUsed”: “15.0183”,
“threadCount”: “20”,
“valid”: [
“Processor: Intel(R) Core™ Ultra 7 265”
]
},
“ZED SDK”: {
“CUDA Toolkit version”: “V13.3.73 -->located in C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v13.3/bin/nvcc.exe”,
“CUDA loading”: false,
“ZED SDK Version (Diag)”: “5.2.3”,
“ZED SDK Version (RT)”: “5.2.3”,
“ai”: {
“checkAI”: true,
“cudaVersion”: 13020,
“tensorVersion”: 101303
},
“binFiles”: [
“nvinfer_10.dll”,
“nvinfer_builder_resource_10.dll”,
“nvinfer_plugin_10.dll”,
“nvonnxparser_10.dll”,
“sl_ai64.dll”,
“sl_zed64.dll”,
“zlibwapi.dll”
],
“driverVersion”: “595.95”,
“drivervDllVersion”: “32.0.15.9595”,
“resourcesFiles”: [
“neural_depth_5.3.model”,
“neural_depth_5.3.model_optimized-fbcbw-1-120-13020-101303-25-192-49152-48-100-512-70-0-0e53-512”,
“neural_depth_5.3.model_optimized-fbcbw-1-120-13020-101303-25-192-49152-48-100-512-70-0-0e55-512”,
“neural_depth_light_5.3.model”,
“neural_depth_light_5.3.model_optimized-fbcbw-1-120-13020-101303-25-192-49152-48-100-512-70-0-0e55-512”,
“objects_performance_3.2.model”,
“objects_performance_3.2.model_optimized-fbcbw-1-120-13020-101303-25-192-49152-48-100-512-70-00”,
“w101303_timing_cache”
],
“resourcesFilesExpected”: [
“objects_performance_3.2”
],
“runtimeDllVersion”: 13020,
“valid”: [
“ZED SDK version: 5.2.3”,
“CUDA version: V13.3.73”
]
}
}