WLAN configuration details Raspberry Pi 4

Hi, I could not find a solution for this so far, so here is my question:
for getting the WLAN connection more stable it is recommended to use the 5GHz mode on Raspberry Pi 4B.
Is there a possibility to configure OMSC somehow to use the 5GHz mode instead of 2.4GHz?
Thank you very much!

Yes as it is reported that there is a interference between the HDMI Signal and the Channels 1-3 of 2.4Ghz.
So either using 5Ghz or avoiding Channels 1-3 should help.

Recommended way is to give different SSID to 2.4 and 5Ghz

OK, so no possibility to configure this on the Pi directly, I will change WLAN configuration of the router…
Thank you very much!