diff --git a/Sources/FusionKit/Error/FKConnectionError.swift b/Sources/FusionKit/Error/FKConnectionError.swift
index 33f29b9..36cf8dd 100644
--- a/Sources/FusionKit/Error/FKConnectionError.swift
+++ b/Sources/FusionKit/Error/FKConnectionError.swift
@@ -14,7 +14,6 @@ public enum FKConnectionError: Error {
     case missingHost
     case missingPort
     case connectionTimeout
-    case connectionUnsatisfied
     case parsingFailed
     case readBufferOverflow
     case writeBufferOverflow
@@ -25,7 +24,6 @@ public enum FKConnectionError: Error {
         case .missingHost: return "missing host"
         case .missingPort: return "missing port"
         case .connectionTimeout: return "connection timeout"
-        case .connectionUnsatisfied: return "connection path is not satisfied"
         case .parsingFailed: return "message parsing failed"
         case .readBufferOverflow: return "read buffer overflow"
         case .writeBufferOverflow: return "write buffer overflow"
diff --git a/Sources/FusionKit/Extensions/Extensions.swift b/Sources/FusionKit/Extensions/Extensions.swift
index c191ea0..cd93739 100644
--- a/Sources/FusionKit/Extensions/Extensions.swift
+++ b/Sources/FusionKit/Extensions/Extensions.swift
@@ -19,7 +19,7 @@ internal extension Timer {
     ///   - completion: completion
     /// - Returns: a source timer
     static func timeout(after: TimeInterval = 3.0, _ completion: @escaping () -> Void) -> DispatchSourceTimer {
-        let dispatchTimer = DispatchSource.makeTimerSource(flags: .strict, queue: DispatchQueue(label: UUID().uuidString))
+        let dispatchTimer = DispatchSource.makeTimerSource(flags: .strict, queue: DispatchQueue(label: UUID().uuidString, qos: .userInteractive))
         dispatchTimer.setEventHandler(handler: completion)
         dispatchTimer.schedule(deadline: .now() + after, repeating: .never)
         dispatchTimer.resume()
diff --git a/Sources/FusionKit/Model/FKConnection.swift b/Sources/FusionKit/Model/FKConnection.swift
index aaebcce..a10b11a 100644
--- a/Sources/FusionKit/Model/FKConnection.swift
+++ b/Sources/FusionKit/Model/FKConnection.swift
@@ -27,9 +27,8 @@ public final class FKConnection: FKConnectionProtocol {
     ///   - port: the host port
     ///   - parameters: network parameters
     ///   - queue: dispatch queue
-    public required init(host: String, port: UInt16, parameters: NWParameters = .tcp, queue: DispatchQueue = .init(label: UUID().uuidString)) {
-        if host.isEmpty { fatalError(FKConnectionError.missingHost.description) }
-        if port == .zero { fatalError(FKConnectionError.missingPort.description) }
+    public required init(host: String, port: UInt16, parameters: NWParameters = .tcp, queue: DispatchQueue = .init(label: UUID().uuidString, qos: .userInteractive)) {
+        if host.isEmpty { fatalError(FKConnectionError.missingHost.description) }; if port == .zero { fatalError(FKConnectionError.missingPort.description) }
         self.connection = NWConnection(host: NWEndpoint.Host(host), port: NWEndpoint.Port(integerLiteral: port), using: parameters)
         self.queue = queue
     }
@@ -115,9 +114,7 @@ private extension FKConnection {
     private func cleanup() -> Void {
         self.queue.async { [weak self] in
             guard let self else { return }
-            invalidate()
-            connection.cancel()
-            framer.reset()
+            invalidate(); connection.cancel(); framer.reset()
         }
     }
     
diff --git a/Sources/FusionKit/Model/FKConnectionOpcodes.swift b/Sources/FusionKit/Model/FKConnectionOpcodes.swift
index 22b65e4..caa4cd7 100644
--- a/Sources/FusionKit/Model/FKConnectionOpcodes.swift
+++ b/Sources/FusionKit/Model/FKConnectionOpcodes.swift
@@ -17,7 +17,7 @@ internal enum FKConnectionOpcodes: UInt8 {
     case ping = 0x3
 }
 
-/// Protocol byte numbers
+/// Protocol byte constants
 @frozen
 internal enum FKConnectionConstants: Int {
     case opcode = 0x1
diff --git a/Sources/FusionKit/Protocols/FKConnectionProtocol.swift b/Sources/FusionKit/Protocols/FKConnectionProtocol.swift
index cfcf496..8c55b3a 100644
--- a/Sources/FusionKit/Protocols/FKConnectionProtocol.swift
+++ b/Sources/FusionKit/Protocols/FKConnectionProtocol.swift
@@ -10,7 +10,7 @@ import Foundation
 import Network
 
 internal protocol FKConnectionProtocol {
-    /// Access to connection State's
+    /// The `FKConnectionState` update values
     var stateUpdateHandler: (FKConnectionState) -> Void { get set }
     
     /// The `FKConnection` is a custom Network protocol implementation of the Fusion Framing Protocol.
diff --git a/Tests/FusionKitTests/FusionKitTests.swift b/Tests/FusionKitTests/FusionKitTests.swift
index f719fa9..cde3b04 100644
--- a/Tests/FusionKitTests/FusionKitTests.swift
+++ b/Tests/FusionKitTests/FusionKitTests.swift
@@ -16,7 +16,7 @@ private enum TestCase {
 }
 
 class FusionKitTests: XCTestCase {
-    private var connection = FKConnection(host: "atonet.de", port: 7878)
+    private var connection = FKConnection(host: "weist.org", port: 7878)
     private var buffer = "50000"
     private let timeout = 10.0
     private let uuid = UUID().uuidString
@@ -59,7 +59,6 @@ class FusionKitTests: XCTestCase {
         XCTAssertEqual(FKConnectionError.missingHost.description, "missing host")
         XCTAssertEqual(FKConnectionError.missingPort.description, "missing port")
         XCTAssertEqual(FKConnectionError.connectionTimeout.description, "connection timeout")
-        XCTAssertEqual(FKConnectionError.connectionUnsatisfied.description, "connection path is not satisfied")
         XCTAssertEqual(FKConnectionError.parsingFailed.description, "message parsing failed")
         XCTAssertEqual(FKConnectionError.readBufferOverflow.description, "read buffer overflow")
         XCTAssertEqual(FKConnectionError.writeBufferOverflow.description, "write buffer overflow")