chore: update --fast defaults (#989)

* chore: update --fast defaults

* Update robyn/argument_parser.py

Co-authored-by: Sanskar Jethi <29942790+sansyrox@users.noreply.github.com>

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Co-authored-by: Sanskar Jethi <29942790+sansyrox@users.noreply.github.com>

robyn/argument_parser.py

@@ -103,8 +103,8 @@ def __init__(self) -> None:
         if self.fast:
             # doing this here before every other check
             # so that processes, workers and log_level can be overridden
-            self.processes = self.processes or os.cpu_count() or 1
-            self.workers = self.workers or ((os.cpu_count() * 2) + 1) or 1
+            self.processes = self.processes or ((os.cpu_count() * 2) + 1) or 1
+            self.workers = self.workers or 2
             self.log_level = self.log_level or "WARNING"
 
         self.processes = self.processes or 1