Introduction
This article explains how to resolve slow scanning, lag, or freezing that may occur when using a Medit intraoral scanner.
Scanning Speed Reference by Model (FPS: Frames per Second)
- i500: Up to 30 FPS
- i600: Up to 35 FPS
- i700, i700 wireless, iE, i900, i900 classic, and i900 Mobility: Over 60 FPS
If scanning freezes and a connection error message appears, refer to the following article.
Intraoral Scanner Connection Issues (i500, i600, i700, i700 wireless, i900, i900c)
Symptoms and Solutions: Slow Scanning or Lag
The screen responds slowly or stutters during scanning, and the FPS drops significantly below the reference value for the scanner model. Possible causes include software options, PC specifications and settings, and hardware conditions.
Check the Medit Scan for Clinics Settings
1. Check the settings in Medit Scan for Clinics.
📖 Settings (Medit Scan for Clinics)
1) Make sure Scanner > Scan Mode is set to Fast & Furious.
This feature is not supported on i500. For i600, this setting is available only after purchasing Feature Upgrade.
2) Scanning Performance > Metal Scan
When Metal Scan is enabled, the FPS may drop when scanning metal or areas with blood to improve scanning performance. This is normal, and the FPS returns to its usual level when scanning regular tooth surfaces.
Turn off Metal Scan while checking the scanning speed. If no issues are found, turn it back on.
Scanning Performance > Use GPU
Make sure Use GPU is also enabled.
Check the Scanner
If the issue also occurs when scanning with the scanner connected to another PC, the scanner is the source of the problem.
1. Make sure the tip and optical window are clean.
Contamination may increase noise in the live view and reduce the FPS.
If contamination is severe, replace the tip and clean the optical window according to the maintenance instructions.
Cleaning of the optical window (i600, i700, i700w)
On i900, i900 classic, i900 Mobility, and iE, the optical window is located inside the scanner body, making it difficult to access, inspect for contamination, or clean yourself. Do not attempt to force access to clean it. Submit a support request to have the scanner inspected.
Check the PC Specifications and Settings
If the issue does not occur when scanning with the scanner connected to another PC, the PC is the source of the problem.
1. Make sure the PC meets the system requirements.
📖 System Requirements (Medit Scan for Clinics)
On fanless MacBook Air models, performance may decrease due to heat buildup rather than insufficient hardware specifications.
2. Check the CPU speed and utilization in Task Manager.
Open Windows Task Manager (Ctrl + Shift + Esc) → Performance → Check CPU Speed and CPU Utilization.
If the CPU speed is normal, check the Medit Scan for Clinics settings and the scanner again.
Make sure to check these values while scanning. CPU Speed and CPU Utilization are normally low when scanning is not in progress.
| Normal CPU Speed | Abnormal CPU Speed |
|
When checking CPU performance during scanning: CPU Utilization: 80% or higher CPU Speed: 3.0 GHz or higher |
When checking CPU performance during scanning: CPU Utilization: 30% or lower CPU Speed: 2.0 GHz or lower If the values fall within the abnormal range, the system may be deliberately limiting CPU performance, for example, for power management. |
Checklist: If the CPU Speed Is Abnormal
Work through the following checklist until the CPU speed returns to normal.
1) Check the laptop’s power connection.
If the laptop is not connected to a power source, CPU performance is automatically limited to conserve battery power. Keep the laptop connected to a power source while scanning.
2) Close unnecessary programs before scanning. If the laptop is overheating, check the following.
- Use the laptop on a flat, hard surface.
- Make sure the vents are not blocked.
- Make sure a protective case or nearby objects are not obstructing heat dissipation.
For a more reliable test, restart the PC before scanning.
3) Configure the power settings.
[Windows]
Control Panel → Power Options → Change plan settings
Change advanced power settings → Processor power management → Set both Minimum processor state and Maximum processor state to 100%.
[Mac]
System Settings → Battery → Energy Mode → High Power
4. Use the manufacturer’s performance management utility.
Use the manufacturer’s performance management utility to set the laptop to high-performance mode.
Most laptop manufacturers provide their own performance management utilities.
These utilities are preinstalled on some models and require separate installation on others.
[Manufacturer Utility Reference]
| Brand | Utility | Recommended Setting | Expert Setting |
| Dell |
Dell Power Manager Dell Optimizer Alienware Command Center |
Dell Power Manager, Dell Optimizer: Thermal Management → Ultra Performance Alienware Command Center: Thermal Profile → Performance or Full Speed |
Thermal/Power Settings can be set to Performance in BIOS. |
| HP |
HP Command Center OMEN Gaming Hub |
HP Command Center: Set to Performance Mode, disable CoolSense OMEN Gaming Hub: System Vitals → Performance Mode + manually adjust fan speed |
Select High Performance power plan in Windows instead of HP Optimized. |
| Lenovo |
Lenovo Vantage Commercial Vantage |
Lenovo Vantage: Device → Thermal Mode: Performance Power Smart Settings disabled |
Set Intelligent Cooling to Performance in BIOS. |
| ASUS | Armoury Crate |
Armoury Crate: Operating Mode: Turbo or Performance Manual adjustment of fan speed and GPU mode available |
- |
| MSI |
MSI Center Creator Center |
MSI Center: User Scenario → Extreme Performance Set fan speed to maximum in System Tuner Creator Center: Use Creator Mode: Rendering |
- |
| Acer |
NitroSense PredatorSense |
NitroSense: Performance Mode, change fan speed from Auto → Max PredatorSense: Adjust Thermal, Power, and Lighting settings for maximum performance |
Use Windows High Performance power plan along with this. |
| Razer | Synapse 4 |
Synapse: Select device → Performance → Custom mode → Set both CPU/GPU to “High” Strengthen cooling by manually adjusting fan speed |
If possible, set to Dedicated GPU Only mode. |
5. Update the graphics card driver.
Install NVIDIA App using the link below, then update the graphics card driver through NVIDIA App.
6. Configure the graphics card for maximum performance in NVIDIA Control Panel.
1) 3D Settings → Manage 3D settings → Global settings
2) Preferred graphics processor → High-performance NVIDIA processor
3) Power Management mode → Prefer maximum performance
7. Configure the graphics card for maximum performance in Windows Settings.
1) Windows Settings → System → Display → Graphics
2) Custom setting for applications → Add desktop app
3) Add the following path: C:\Program Files\Medit\Medit Link\Medit Link\Medit_iScan.exe
4) GPU preference → Select High Performance (NVIDIA GeForce RTX 0000 GPU).
8. A very high display resolution or multiple external monitors may cause issues.
Use only the laptop’s built-in display, set the resolution to 1920 × 1080, and check the CPU performance.
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