WingsRX or Pixera can show bad performance issues that are not justified by bandwidth or decoding issues. If you see a lot of VSync errors in the RX dashboard but all other indicators green, you should look for the GPU usage.

If the GPU load is very high on a monitor GPU (here: Quadro P620), the render engine is using the small, comparable weak GPU and therefore lacks in performance.

Usually this “GPU affinity” should be determined automatically, but for unknown reasons, this doesn’t seem to work on some systems. To solve this, the “GPU affinity” can be set manually.

Solution for WingsRX

1. Close Wings RX.
2. Open C:\ProgramData\AV Stumpfl\Wings RX\user_settings.lua using Windows Notepad
3. Change the value contect_settings.affinity = ‘gpu0’ to ‘gpu0’or to ‘gpu1’ or to ‘gpu2’  (depending on the number of performance GPUs in your system).
4. Save and close Notepad.
5. Launch Wings RX and start a show => If the performance is OK, one of the stronger GPUs is doing the job now and the affinity settings can remain. Otherwise, repeat these steps and try a different value for for the GPU.

Solution for Pixera

• Close Pixera.
• Open C:\ProgramData\AV Stumpfl\RX\user_settings.lua using Windows Notepad
• Change the value contect_settings.affinity = ‘gpu0’ to ‘gpu0’or to ‘gpu1’ or to ‘gpu2’  (depending on the number of performance GPUs in your system).
• Save and close Notepad.
• Launch Pixera and start a show => If the performance is OK, one of the stronger GPUs is doing the job now and the affinity settings can remain. Otherwise, repeat these steps and try a different value for the GPU.