diff --git a/certy.ps1 b/certy.ps1
index 44ea542..0ecd1d4 100644
--- a/certy.ps1
+++ b/certy.ps1
@@ -248,32 +248,59 @@ function Invoke-Replication {
         return
     }
 
-    foreach ($server in $targets) {
-        $usesToken = $Command -match "\{server\}"
-        $cmd = if ($usesToken) { $Command.Replace("{server}", $server) } else { $Command }
-        $cmd = $cmd.Trim()
-        if ($cmd -match "^(?i)\s*/repadmin\b") {
-            $cmd = $cmd -replace "^(?i)\s*/repadmin\b", "repadmin"
-        }
-        if ($UseRemote -and $cmd -match "(?i)\brepadmin\b" -and $cmd -match "(?i)\bsyncall\b") {
-            $remoteCmd = [regex]::Replace($cmd, "(?i)\\brepadmin\\s+/syncall\\s+\\S+", "repadmin /syncall")
-            & $Log "Replication (remote): $server -> $remoteCmd"
-            try {
-                Invoke-Command -ComputerName $server -ScriptBlock { param($c) & $env:ComSpec /c $c } -ArgumentList $remoteCmd |
-                    ForEach-Object { & $Log $_ }
-            } catch {
-                & $Log ("Replication error on {0}: {1}" -f $server, $_.Exception.Message)
+    $sessions = @{}
+    try {
+        foreach ($server in $targets) {
+            $usesToken = $Command -match "\{server\}"
+            $cmd = if ($usesToken) { $Command.Replace("{server}", $server) } else { $Command }
+            $cmd = $cmd.Trim()
+            if ($cmd -match "^(?i)\s*/repadmin\b") {
+                $cmd = $cmd -replace "^(?i)\s*/repadmin\b", "repadmin"
             }
-            continue
-        }
-        if (-not $usesToken -and $server -and $cmd -match "(?i)\brepadmin\b" -and $cmd -match "(?i)\bsyncall\b") {
-            if ($cmd -notmatch "(?i)\\bsyncall\\s+\\S+") {
-                $cmd = $cmd -replace "(?i)\\bsyncall\\b", "syncall $server"
+
+            if ($UseRemote) {
+                if (-not $sessions.ContainsKey($server)) {
+                    try {
+                        $sessions[$server] = New-PSSession -ComputerName $server -ErrorAction Stop
+                        & $Log "Replication session opened: $server"
+                    } catch {
+                        & $Log ("Replication session error on {0}: {1}" -f $server, $_.Exception.Message)
+                        continue
+                    }
+                }
+
+                $remoteCmd = $cmd.Replace("{server}", "").Trim()
+                $remoteCmd = [regex]::Replace($remoteCmd, "\s{2,}", " ")
+                if ($remoteCmd -match "(?i)\brepadmin\b" -and $remoteCmd -match "(?i)\bsyncall\b") {
+                    $remoteCmd = [regex]::Replace($remoteCmd, "(?i)\brepadmin\s+/syncall\s+\S+", "repadmin /syncall")
+                }
+                if ([string]::IsNullOrWhiteSpace($remoteCmd)) {
+                    & $Log "Replication skipped: empty command for $server."
+                    continue
+                }
+                & $Log "Replication (remote): $server -> $remoteCmd"
+                try {
+                    Invoke-Command -Session $sessions[$server] -ScriptBlock { param($c) & $env:ComSpec /c $c } -ArgumentList $remoteCmd |
+                        ForEach-Object { & $Log $_ }
+                } catch {
+                    & $Log ("Replication error on {0}: {1}" -f $server, $_.Exception.Message)
+                }
+                continue
             }
+
+            if (-not $usesToken -and $server -and $cmd -match "(?i)\brepadmin\b" -and $cmd -match "(?i)\bsyncall\b") {
+                if ($cmd -notmatch "(?i)\\bsyncall\\s+\\S+") {
+                    $cmd = $cmd -replace "(?i)\\bsyncall\\b", "syncall $server"
+                }
+            }
+            if ([string]::IsNullOrWhiteSpace($cmd)) { continue }
+            & $Log "Replication: $cmd"
+            & $env:ComSpec /c $cmd | ForEach-Object { & $Log $_ }
+        }
+    } finally {
+        foreach ($session in $sessions.Values) {
+            try { Remove-PSSession -Session $session } catch {}
         }
-        if ([string]::IsNullOrWhiteSpace($cmd)) { continue }
-        & $Log "Replication: $cmd"
-        & $env:ComSpec /c $cmd | ForEach-Object { & $Log $_ }
     }
 }