Frequency Question About SimFlyLinker

How much does each function of SimFly Linker affect my FPS?

Very little.

SimFly Linker mainly interacts with MSFS through API, and the underlying code is written in C++. When running normally, SimFly Linker almost 0 CPU, even in streaming video mode, the usage of CPU is still around 2%.

The only performance fluctuation may occur during video recording, but due to the use of Windows’ latest screen recording function (this is the main reason why Windows system requires version 1903 or above), the performance fluctuation is quite small. According to tests, in a host configuration with a 6900XT graphics card + 32GB memory + AMD 6800, using the 60fps 1080p recording option, the game’s frame rate fluctuation is about 2-3%.

Also, at the end of the recording, SimFly Linker’s use of memory will spike briefly because the program needs to read the recorded video into memory for processing and writing to disk.

How much does the FDR plugin affect my game?

Very little.

The FDR plugin will automatically start every time you fly (there is no need to start SimFly Linker in advance). Due to the use of asynchronous reading and writing technology, and the data read and recorded is very small, so the impact on performance can be ignored.

After my flight, I couldn’t find the record on the FDR page

The FDR plugin filters out records under the following conditions – flight time is less than 2 minutes or there are less than 10 valid record entries. If you find that you meet these conditions but still can’t see the FDR record, you can click the “Open Files” button at the bottom of the FDR page to check if the corresponding files have been created in the folder that appears. If the folder does not exist as indicated, it is likely that some third-party plugins have changed the path where the data is saved. Please contact me at ethantoken@gmail.com, and I will help you investigate the issue.

FPS Drops When Using Fenix MCDU or G1000 Video Transmission

If you find that your game’s FPS has dropped after transmitting real-time video to SimFlyPad using the pop-up window mode of Fenix MCDU or G1000, this is a “normal” phenomenon. The reason for this issue is that the current MSFS does not support good performance for pop-up windows, and it has little to do with the video transmission feature of SimFlyPad itself. Microsoft’s official development plan indicates that this issue is expected to be fixed in SU 15.

Tip: For some users, turning off vertical synchronization can significantly improve the performance of pop-up windows. (Needs to be turned off in both game settings and graphics settings)

I Can’t Pop Up My Window Anymore

After using the pop-up window transfer feature of SimFly Linker, you might find that in your next gaming session, no matter how you click Right ALT + Left Mouse Button, you can’t see the window pop up anymore. Don’t worry, it’s not that the window can’t pop up; rather, after the window pops up, MSFS immediately moves it to a remembered location by MSFS. (This happens because SimFly Linker moves the window to a hidden position during streaming. If the window’s position remains hidden when you exit the game, MSFS will remember this incorrect position.)

  • To reset the position of your current pop-up window: You can click the RESET Popup Windows button on the Tools page of SimFly Linker.
  • To make MSFS remember the “correct” position of the pop-up window again, after clicking the “RESET Popup Windows” button, keep the pop-up window open and return to the game’s main menu.

How much does the Core plugin affect my game performance?

Very little.

The Core plugin only starts working after SimFly Pad switches to the Cockpit page and executes “Connect”. Because it uses update notification and asynchronous refresh mechanism, even when using a panel like B737 with hundreds of data variables, the impact on the game FPS is very small.

At the same time, since SimFly Linker and Core plugin communicate through API via memory, the efficiency of data transmission is also very high.

SimFly Linker crashes during the “Recording” function.

This issue is usually due to unstable graphics card drivers. For AMD graphics card users, changing the drivers can solve the problem.

Multi-Device Connection

Currently, SimFly Linker only supports the connection of one SimFly Pad device at a time. If multiple SimFly Pads are connected simultaneously, incorrect statuses may occur.

My SimFly Pad Cannot Connect to SimFly Linker

If you’re experiencing difficulties connecting your SimFly Pad to SimFly Linker, please follow these steps for troubleshooting:

  • Check Windows Firewall Settings: Start by temporarily disabling the Windows firewall, and then restart both SimFly Pad and SimFly Linker. Often, firewall settings can interfere with the connection.
  • Utilize Network diagnoses: Navigate to the network settings page on your SimFly Pad and use the diagnose tools provided. These tools can help identify and guide you through resolving common connectivity issues.
  • 💡Please refer to the Firewall and Connection Diagnose section in the SimFly Linker User Guide mentioned in this document.
  • Manual IP Configuration: If the above steps don’t resolve the issue, consider manually inputting SimFly Linker’s IP address in SimFlyPad’s Camera Settings. You can find the IP address (generally starting with 192 or 172) in the lower left corner of SimFly Linker’s Settings. Example IP: 192.168.1.123.
  • Network Compatibility Check: If you’re still unable to connect, there might be a compatibility issue between your mobile device and PC. Download a network diagnostic app like iNetTools on your mobile device and use it to ping your PC. If the ping fails, it suggests a network configuration issue.
  • Ensure both devices are on the same network and not on separate guest networks.
  • Verify that your PC is set to a private network in the Windows Network Settings.
  • Disable any wireless isolation features on your router such as Client Isolation or SSID Isolation.
  • If your router supports both 2.4GHz and 5GHz bands, ensure both devices are on the same band.
  • Research online to check if your router model has known issues with device connectivity on the same network.
  • Revisit Firewall and Antivirus Settings: If you successfully ping your PC but still can’t connect even after setting the IP address manually in SimFlyPad, the issue might still lie with the Windows firewall or antivirus software. Double-check these settings to ensure they’re not blocking the connection.
  • If you are using a mobile hotspot to connect your PC with SimFly Pad, please disable the Private WLAN Address option in your iOS system’s WLAN settings.

By following these steps, you should be able to diagnose and resolve most connectivity issues between SimFly Pad and SimFly Linker.