fix bad exit errorcode

.github/workflows/run-performance.yml

@@ -183,17 +183,32 @@ jobs:
         run: |
           ${{ github.workspace }}/docker/speedtests/utils/windows-kill.exe -SIGINT @(Get-Process qpep | select -expand id)
           
+      - name: Wait Client Stop
+        if: always()
+        shell: pwsh
+        continue-on-error: true
+        run: |
           $Stoploop = $false
+          [ int ]$MaxRetries = "60"
+          
           do {
             try {
-              Get-Process qpep -ErrorAction Stop | select -expand id | out-null
+              $id = Get-Process qpep -ErrorAction Stop | select -expand id
+              Write-Host "QPep client still active with pid ${id}, wait 1sec..."
+              $Retrycount = $Retrycount - 1
               Start-Sleep -Seconds 1
-              Write-Host "QPep client still active, wait 1sec..."
             }
             catch {
               $Stoploop = $true
               Write-Host "QPep client stopped"
             }
+          
+            if ($Retrycount -lt 0){
+              Write-Error "Could not get stop client after $MaxRetries retries, forcing stop."
+              $Stoploop = $true
+          
+              Get-Process qpep | Stop-Process
+            }
           }
           While($Stoploop -eq $false)