NetPlay: Add additional comments for host input authority mode

Source/Core/Core/NetPlayClient.cpp

@@ -1452,6 +1452,10 @@ bool NetPlayClient::GetNetPads(const int pad_nb, const bool batching, GCPadStatu
 
   if (m_host_input_authority && !m_local_player->IsHost())
   {
+    // CoreTiming acts funny and causes what looks like frame skip if
+    // we toggle the emulation speed too quickly, so to prevent this
+    // we wait until the buffer has been over for at least 1 second.
+
     const bool buffer_over_target = m_pad_buffer[pad_nb].Size() > m_target_buffer_size + 1;
     if (!buffer_over_target)
       m_buffer_under_target_last = std::chrono::steady_clock::now();

Source/Core/Core/NetPlayClient.h

@@ -157,6 +157,10 @@ protected:
   Common::Flag m_is_running{false};
   Common::Flag m_do_loop{true};
 
+  // In non-host input authority mode, this is how many packets each client should
+  // try to keep in-flight to the other clients. In host input authority mode, this is how
+  // many incoming input packets need to be queued up before the client starts
+  // speeding up the game to drain the buffer.
   unsigned int m_target_buffer_size = 20;
   bool m_host_input_authority = false;