Add more documentation to loggerPollingSpeed setting

base/src/main/java/de/staropensource/sosengine/base/EngineConfiguration.java

@@ -218,16 +218,20 @@ public final class EngineConfiguration extends Configuration {
 
     /**
      * Contains how fast the logging thread will poll for queued messages.
+     * This also causes messages to be buffered.
+     * <p>
      * Only applies if {@code optimizeLogging} is turned on.
+     * Values below {@code 1} will poll for queued messages as fast as it can.
+     * This however has pretty much no benefit. Leave it at {@code 5}, it works quite well.
      *
      * @see #optimizeLogging
-     * @since v1-alpha1
+     * @since v1-alpha4
      * -- GETTER --
      * Gets the value for {@link #loggerPollingSpeed}.
      *
      * @return variable value
      * @see #loggerPollingSpeed
-     * @since v1-alpha1
+     * @since v1-alpha4
      */
     private int loggerPollingSpeed;