3D game Screen sharing is so slow using Jitsi

Hello, I want to screen share smoothly for my online game (Let’s say Fortnite) but it’s very slow like 5FPS.
Here is my config:

<script>
	if(!voicechat_name) {
		voicechat_name = "guest";
	}
	
	$(document).ready(function () {
		var domain = "8x8.vc";
		var options = {
			roomName: "???????????????????",
			width: "100%",
			height: "500px",
			parentNode: document.querySelector("#jitsi-1"),
			userInfo: {
				displayName: voicechat_name
			},
			configOverwrite: {
				prejoinPageEnabled: false,
				startWithAudioMuted: true,
				startWithVideoMuted: true,
				disableDeepLinking: true,
                disableProfile:true,
                videoQuality: {
                    preferredCodec: "VP9",
                    maxBitratesVideo: {
                        low: 200000,
                        standard: 500000,
                        high: 1500000,
                    },
                    minHeightForQualityLvl: {
                        360: "standard",
                        720: "high",
                    },
                },
                testing: {
                    capScreenshareBitrate: 0
                },
                desktopSharingFrameRate: {
                    min: 30,
                    max: 30
                }
			},
			interfaceConfigOverwrite: {
				DISABLE_DOMINANT_SPEAKER_INDICATOR: true,
				DEFAULT_BACKGROUND: "#111",
				noSsl: true,
				SHOW_JITSI_WATERMARK: false,
				HIDE_DEEP_LINKING_LOGO: true,
				SHOW_BRAND_WATERMARK: false,
				SHOW_WATERMARK_FOR_GUESTS: false,
				SHOW_POWERED_BY: false,
				TOOLBAR_BUTTONS: [
					'microphone', 'camera', 'closedcaptions', 'desktop', 'fullscreen',
					'fodeviceselection', 'hangup', 'profile', 'recording',
					'livestreaming', 'etherpad', 'sharedvideo', 'settings', 'raisehand',
					'videoquality', 'filmstrip', 'feedback', 'stats', 'shortcuts',
					'tileview'
				],
			}
		}
		var api = new JitsiMeetExternalAPI(domain, options);
	});
</script>

While I simply livestream using Jitsi using Chrome web browser, on the other hand, I use OBS for my
Twitch.tv livestreaming. It plays very smooth on Twitch for any games such as Fortnite, Apex Legends, etc. The setting I use on OBS program is:


With these settings in above 2 images, OBS livestreams very smooth on Twitch at true 30~60FPS.
But with Jitsi it looks like 5 FPS.

How do I make Jitsi behave the best for 3D game screen share?
Thank you

Have you tried setting a higher rate?

yes, but they never worked. Looks almost similarly lagging when livestreaming game

IIRC, or at least in previous versions once you set the rate up, you need to reload the page then share screen.

Otherwise you kept the old rare, I can’t tell if that has changed since then.