Don't accept values smaller than parallel threads for target size

- Smaller than parallel threads implies any time any thread tries to do anything, another thread must cancel its work, and the chunk is submitted.

worldedit-core/src/main/java/com/fastasyncworldedit/core/Fawe.java

@@ -253,6 +253,7 @@ public class Fawe {
         } catch (Throwable e) {
             LOGGER.error("Failed to load config.", e);
         }
+        Settings.IMP.QUEUE.TARGET_SIZE = Math.max(Settings.IMP.QUEUE.TARGET_SIZE, Settings.IMP.QUEUE.PARALLEL_THREADS);
     }
 
 

worldedit-core/src/main/java/com/fastasyncworldedit/core/configuration/Settings.java

@@ -293,7 +293,8 @@ public class Settings extends Config {
                 " - FAWE will start placing before all calculations are finished",
                 " - A larger value will use slightly less CPU time",
                 " - A smaller value will reduce memory usage",
-                " - A value too small may break some operations (deform?)"
+                " - A value too small may break some operations (deform?)",
+                " - Values smaller than the configurated parallel threads are not accepted"
 
         })
         public int TARGET_SIZE = 64;