diff --git a/eng/pipelines/common/templates/runtimes/build-runtime-tests-and-send-to-helix.yml b/eng/pipelines/common/templates/runtimes/build-runtime-tests-and-send-to-helix.yml
index b0a2043bbd571..cd249357a9c6d 100644
--- a/eng/pipelines/common/templates/runtimes/build-runtime-tests-and-send-to-helix.yml
+++ b/eng/pipelines/common/templates/runtimes/build-runtime-tests-and-send-to-helix.yml
@@ -68,7 +68,7 @@ steps:
           displayName: "AOT compile CoreCLR tests"
           target: ${{ coalesce(parameters.llvmAotStepContainer, parameters.container) }}
       - ${{ if in(parameters.runtimeVariant, 'llvmfullaot', 'minifullaot') }}:
-        - script: $(Build.SourcesDirectory)/src/tests/build$(scriptExt) $(logRootNameArg)MonoAot mono_fullaot ${{ parameters.buildConfig }} ${{ parameters.archType }} /p:RuntimeVariant=${{ parameters.runtimeVariant }} -maxcpucount:1
+        - script: $(Build.SourcesDirectory)/src/tests/build$(scriptExt) $(logRootNameArg)MonoAot mono_fullaot ${{ parameters.buildConfig }} ${{ parameters.archType }} /p:RuntimeVariant=${{ parameters.runtimeVariant }} -maxcpucount:2
           displayName: "AOT compile CoreCLR tests"
           target: ${{ coalesce(parameters.llvmAotStepContainer, parameters.container) }}
     - ${{ if eq(parameters.archType, 'arm64') }}:
diff --git a/eng/pipelines/runtime-llvm.yml b/eng/pipelines/runtime-llvm.yml
index 5be2a5b063aaa..16c337b406d07 100644
--- a/eng/pipelines/runtime-llvm.yml
+++ b/eng/pipelines/runtime-llvm.yml
@@ -144,7 +144,7 @@ extends:
             nameSuffix: AllSubsets_Mono_LLVMFULLAOT_RuntimeTests
             runtimeVariant: llvmfullaot
             buildArgs: -s mono+libs+clr.hosts+clr.iltools -c $(_BuildConfig) /p:MonoEnableLLVM=true
-            timeoutInMinutes: 360
+            timeoutInMinutes: 400
             condition: >-
               or(
                 eq(stageDependencies.EvaluatePaths.evaluate_paths.outputs['SetPathVars_libraries.containsChange'], true),
@@ -191,7 +191,7 @@ extends:
             nameSuffix: AllSubsets_Mono_LLVMFULLAOT_RuntimeIntrinsicsTests
             runtimeVariant: llvmfullaot
             buildArgs: -s mono+libs+clr.hosts+clr.iltools -c $(_BuildConfig) /p:MonoEnableLLVM=true
-            timeoutInMinutes: 360
+            timeoutInMinutes: 400
             condition: >-
               or(
                 eq(stageDependencies.EvaluatePaths.evaluate_paths.outputs['SetPathVars_libraries.containsChange'], true),