diff --git a/http_upgrade b/http_upgrade
index 449001e..c2a202c 100644
--- a/http_upgrade
+++ b/http_upgrade
@@ -15,13 +15,16 @@ http2 on;
 # http3
 # Open port 443/udp to use http3
 # Add reuseport to ONLY ONE virtual host: listen 443 quic reuseport;
-listen 443 quic;
+# listen 443 quic;
 add_header Alt-Svc 'h3=":443"; ma=86400';
 quic_retry on;
+quic_gso on;
+# quic_bpf on;
+http3_stream_buffer_size 512k;
 http3 on;
 
 # Certbot defaults
-listen 443 ssl;
-include /etc/letsencrypt/options-ssl-nginx.conf;
-ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
-add_header Strict-Transport-Security "max-age=31536000" always;
+# listen 443 ssl;
+# include /etc/letsencrypt/options-ssl-nginx.conf;
+# ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
+add_header Strict-Transport-Security "max-age=31536000" always;
\ No newline at end of file