diff --git a/build/jenkins/pipelines/freeBSD.Jenkinsfile b/build/jenkins/pipelines/freeBSD.Jenkinsfile
index b2c01a342d..1127d83075 100644
--- a/build/jenkins/pipelines/freeBSD.Jenkinsfile
+++ b/build/jenkins/pipelines/freeBSD.Jenkinsfile
@@ -42,8 +42,8 @@ pipeline {
 				sh "git lfs pull -I binaries/data/tests"
 				sh "git lfs pull -I \"binaries/data/mods/_test.*\""
 
-				sh "libraries/build-source-libs.sh -j2 2> freebsd-prebuild-errors.log"
-				sh "build/workspaces/update-workspaces.sh -j2 --jenkins-tests 2>> freebsd-prebuild-errors.log"
+				sh "libraries/build-source-libs.sh 2> freebsd-prebuild-errors.log"
+				sh "build/workspaces/update-workspaces.sh --jenkins-tests 2>> freebsd-prebuild-errors.log"
 			}
 			post {
 				failure {
@@ -56,7 +56,7 @@ pipeline {
 			steps {
 				retry (2) {
 					script {
-						try { sh "cd build/workspaces/gcc/ && gmake -j2 config=release" }
+						try { sh "cd build/workspaces/gcc/ && gmake config=release" }
 						catch(e) {
 							sh "cd build/workspaces/gcc/ && gmake clean config=release"
 							throw e
diff --git a/build/jenkins/pipelines/linux.Jenkinsfile b/build/jenkins/pipelines/linux.Jenkinsfile
index bd93f51d2f..9291d0028f 100644
--- a/build/jenkins/pipelines/linux.Jenkinsfile
+++ b/build/jenkins/pipelines/linux.Jenkinsfile
@@ -65,13 +65,13 @@ pipeline {
 							sh "git lfs pull -I binaries/data/tests"
 							sh "git lfs pull -I \"binaries/data/mods/_test.*\""
 
-							sh "libraries/build-source-libs.sh -j1 2> ${JENKINS_COMPILER}-prebuild-errors.log"
+							sh "libraries/build-source-libs.sh 2> ${JENKINS_COMPILER}-prebuild-errors.log"
 
 							script {
 								if (env.JENKINS_PCH == "no-pch") {
-									sh "build/workspaces/update-workspaces.sh -j1 --jenkins-tests --without-pch 2>> ${JENKINS_COMPILER}-prebuild-errors.log"
+									sh "build/workspaces/update-workspaces.sh --jenkins-tests --without-pch 2>> ${JENKINS_COMPILER}-prebuild-errors.log"
 								} else {
-									sh "build/workspaces/update-workspaces.sh -j1 --jenkins-tests 2>> ${JENKINS_COMPILER}-prebuild-errors.log"
+									sh "build/workspaces/update-workspaces.sh --jenkins-tests 2>> ${JENKINS_COMPILER}-prebuild-errors.log"
 								}
 							}
 						}
@@ -86,7 +86,7 @@ pipeline {
 						steps {
 							retry(2) {
 								script {
-									try { sh "cd build/workspaces/gcc/ && make -j1 config=debug" }
+									try { sh "cd build/workspaces/gcc/ && make config=debug" }
 									catch(e) {
 										sh "cd build/workspaces/gcc/ && make clean config=debug"
 										throw e
@@ -108,7 +108,7 @@ pipeline {
 						steps {
 							retry(2) {
 								script {
-									try { sh "cd build/workspaces/gcc/ && make -j1 config=release" }
+									try { sh "cd build/workspaces/gcc/ && make config=release" }
 									catch(e) {
 										sh "cd build/workspaces/gcc/ && make clean config=release"
 										throw e
diff --git a/build/jenkins/pipelines/macOS.Jenkinsfile b/build/jenkins/pipelines/macOS.Jenkinsfile
index 263b1d0a3f..fbf6e1f12b 100644
--- a/build/jenkins/pipelines/macOS.Jenkinsfile
+++ b/build/jenkins/pipelines/macOS.Jenkinsfile
@@ -36,8 +36,8 @@ pipeline {
 				sh "git lfs pull -I binaries/data/tests"
 				sh "git lfs pull -I \"binaries/data/mods/_test.*\""
 
-				sh "libraries/build-macos-libs.sh -j4 2> macos-prebuild-errors.log"
-				sh "build/workspaces/update-workspaces.sh -j4 --jenkins-tests 2>> macos-prebuild-errors.log"
+				sh "libraries/build-macos-libs.sh 2> macos-prebuild-errors.log"
+				sh "build/workspaces/update-workspaces.sh --jenkins-tests 2>> macos-prebuild-errors.log"
 			}
 			post {
 				failure {
@@ -50,7 +50,7 @@ pipeline {
 			steps {
 				retry(2) {
 					script {
-						try { sh "cd build/workspaces/gcc/ && make -j4 config=debug" }
+						try { sh "cd build/workspaces/gcc/ && make config=debug" }
 						catch(e) {
 							sh "cd build/workspaces/gcc/ && make clean config=debug"
 							throw e
@@ -72,7 +72,7 @@ pipeline {
 			steps {
 				retry(2) {
 					script {
-						try { sh "cd build/workspaces/gcc/ && make -j4 config=release" }
+						try { sh "cd build/workspaces/gcc/ && make config=release" }
 						catch(e) {
 							sh "cd build/workspaces/gcc/ && make clean config=release"
 							throw e
diff --git a/build/jenkins/pipelines/windows.Jenkinsfile b/build/jenkins/pipelines/windows.Jenkinsfile
index a321d52b01..c001798c5d 100644
--- a/build/jenkins/pipelines/windows.Jenkinsfile
+++ b/build/jenkins/pipelines/windows.Jenkinsfile
@@ -18,7 +18,7 @@
 // This pipeline builds the game on Windows (which uses the MSVC 15.0 compiler from Visual Studio 2017) and runs tests.
 
 def visualStudioPath = "\"C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\MSBuild\\15.0\\Bin\\MSBuild.exe\""
-def buildOptions = "/p:PlatformToolset=v141_xp /p:XPDeprecationWarning=false /t:pyrogenesis /t:AtlasUI /t:test /m:2 /nologo -clp:NoSummary"
+def buildOptions = "/p:PlatformToolset=v141_xp /p:XPDeprecationWarning=false /t:pyrogenesis /t:AtlasUI /t:test /nologo -clp:NoSummary"
 
 pipeline {
 	// Stop previous build in pull requests, but not in branches