How to tell Windows to use LAN and WLAN simultaneously to increase speed?

I have a 1Gbit/s connection to my ISP, but my home network has an old Ethernet cable(from the router to PC) which can only transfer 100Mbit/s. I also have a Wifi adapter which has approx. a transfer rate of 200-300Mbit/s. I'm using Windows 11 on this PC. Normally the LAN connection is sufficient, but for heavy downloads like Steam library I would like to speed it up by combining both network adapters. I tried various solutions I could find on the internet, eg. bridging, deactivating priority, setting a Windows policy(I don't remember which). Nothing of it worked, for example, if I create a bri

Question by Dieter Pisarewski on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.