diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index c0955e56..40168446 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -83,7 +83,7 @@ jobs:
     strategy:
       max-parallel: 1
       matrix:
-        backend: [ 'quic-go', 'quicly-go' ]
+        backend: [ 'quicly-go' ]
         cca: [ 'reno' ]
         slowstart: [ 'search' ]
         connection_delay_ms: [ 0, 500 ]
@@ -129,6 +129,7 @@ jobs:
               exit 1
           fi
           echo "CURRENT_RUN=${CURRENT_RUN}" >> $GITHUB_ENV
+          echo "Current run: ${CURRENT_RUN}"
           gh run download ${CURRENT_RUN} --repo ${{ env.BASE_REPO }} -p client_*
           gh run download ${CURRENT_RUN} --repo ${{ env.BASE_REPO }} -p server_*
 
@@ -144,6 +145,7 @@ jobs:
       - name: Delete results artifacts
         if: success()
         run: |
+          echo "Current run: ${CURRENT_RUN}"
           if [[ "${CURRENT_RUN}" -eq "" ]]; then
               exit 1
           fi
diff --git a/docker/speedtests/speed_test.go b/docker/speedtests/speed_test.go
index 6493295f..8e85c148 100644
--- a/docker/speedtests/speed_test.go
+++ b/docker/speedtests/speed_test.go
@@ -148,7 +148,7 @@ func (s *SpeedTestsConfigSuite) TestRun() {
 
 			var totalBytesInTimeDelta int64 = 0
 			var start = time.Now()
-			var buff = make([]byte, 4096)
+			var buff = make([]byte, 512*1024)
 
 			ctx, cancel := context.WithCancel(context.Background())
 			go idlingTimeout(resp.Body, cancel, &flagActivity, &toRead, idleTimeout)
@@ -161,7 +161,7 @@ func (s *SpeedTestsConfigSuite) TestRun() {
 				default:
 				}
 
-				rd := io.LimitReader(resp.Body, 4096)
+				rd := io.LimitReader(resp.Body, 512*1024)
 				read, err := rd.Read(buff)
 				if err != nil && err != io.EOF {
 					if nErr, ok := err.(net.Error); ok && nErr.Timeout() {