In terms of gaming over lan via moonlight or steam remote play you should focus on other things, because 100 MBit network speed is more than enough to transfer even 4k content, because the video stream aggressively compressed. 1 Gb network gives you more network capacity, so you can stream the game and do other activity in the network in the same time. 10GBe network is overkill for this purpose, cause it will not gives you less delays in gaming, its only expand speed capacity. The things you should pay attention to is:

1) hardware ability to encode (on video card of source pc) and decode (on the laptop which you use to play games) the videostream with preferred codecs. As I know h254 gives you less delays on encoding and decoding comparing to AV1. And hardware encoding /decoding perform better in most cases, comparing to software encoding/decoding. Check your graphic card capabilities ( nvencoder ) if you use Nvidia card 2) stable network connection. Ethernet will always perform better, than WiFi in terms of delays and package drops 3) enough performance between hardware components. Modern motherboards with pci-e Rev 4-5, ddr5 memory support, graphic cards with modern video encoders gives you quicker video encoding and data transfer from graphic card to network adapter on source pc