Thanks for reply.
I have a "Netis WF2123" (don't know which chipset) and a USB-WLAN-Stick with Ralink 5370 chipset. The Ralink 5370 is working with the OGS - but not with the current version of RecalBox.
With other Operating-Systems my WLAN-Stick is working with the OGS. So it seems to be no Hardwareissue.
@Ghoulflier Can you test whether this happens in a clean, unmodified installation of the latest official version?
Can you test with another HDMI cable?
There are several versions of HDMI cables (1.1, 1.2, 1.3, 1.4, 2, 2.1), do you know which one you are using?
Can you test it on another TV?