diff --git a/eng/pipelines/common/templates/runtimes/run-test-job.yml b/eng/pipelines/common/templates/runtimes/run-test-job.yml
index d937159662e682..9e14c5bac2e0b8 100644
--- a/eng/pipelines/common/templates/runtimes/run-test-job.yml
+++ b/eng/pipelines/common/templates/runtimes/run-test-job.yml
@@ -331,17 +331,6 @@ jobs:
 
         helixProjectArguments: '$(Build.SourcesDirectory)/src/tests/Common/helixpublishwitharcade.proj'
 
-        # helixpublishwitharcade.proj processes one scenario per parallel MSBuild invocation. Each invocation only
-        # creates Helix work items and them waits for their completion on the remote Helix machines, so is not
-        # computationally intensive. We want Helix to be provided with all the possible work items in up front,
-        # so can do as much work in parallel as possible. Thus, increase the amount of allowed MSBuild parallelism
-        # to at least the maximum number of scenarios to be processed in a testGroup.
-        #
-        # We only need to do this for a testGroup with more than one or two scenarios, though it isn't functionally
-        # a problem to always do it. Thus, we only exempt this setting for a few cases.
-        ${{ if notIn(parameters.testGroup, 'innerloop', 'outerloop', 'ilasm', 'gc-longrunning', 'gc-simulator', 'gc-standalone', 'gc-standalone-server') }}:
-          msbuildParallelism: '/maxcpucount:55'
-
         ${{ if in(parameters.testGroup, 'innerloop', 'outerloop') }}:
           ${{ if and(eq(parameters.runInterpreter, 'true'),eq(variables['Build.Reason'], 'PullRequest')) }}:
             scenarios:
diff --git a/eng/pipelines/common/templates/runtimes/send-to-helix-step.yml b/eng/pipelines/common/templates/runtimes/send-to-helix-step.yml
index e959eba200b4cf..50e9de6dcf9fd2 100644
--- a/eng/pipelines/common/templates/runtimes/send-to-helix-step.yml
+++ b/eng/pipelines/common/templates/runtimes/send-to-helix-step.yml
@@ -13,7 +13,6 @@ parameters:
   helixQueues: ''
   helixType: ''
   useHelixMonitor: false
-  msbuildParallelism: '/maxcpucount'
   scenarios: ''
   timeoutPerTestCollectionInMinutes: ''
   timeoutPerTestInMinutes: ''
@@ -45,7 +44,7 @@ steps:
     osGroup: ${{ parameters.osGroup }}
     sendParams: >
       ${{ parameters.helixProjectArguments }}
-      ${{ parameters.msbuildParallelism }}
+      /m
       /bl:$(Build.SourcesDirectory)/artifacts/log/SendToHelix.binlog
       /p:TargetArchitecture=${{ parameters.archType }}
       /p:TargetOS=${{ parameters.osGroup }}