diff --git a/systemd/pihole-cloudsync.slice b/systemd/pihole-cloudsync.slice
new file mode 100644
index 0000000..585d9fc
--- /dev/null
+++ b/systemd/pihole-cloudsync.slice
@@ -0,0 +1,6 @@
+[Unit]
+Description=pihole-cloudsync resource limiter slice
+Before=slices.target
+
+[Slice]
+CPUQuota=50%
diff --git a/systemd/pihole-cloudsync@.service b/systemd/pihole-cloudsync@.service
index 2766df9..2e20a47 100644
--- a/systemd/pihole-cloudsync@.service
+++ b/systemd/pihole-cloudsync@.service
@@ -5,3 +5,4 @@ Description=pihole cloud sync - %i
 Type=oneshot
 EnvironmentFile=-/etc/default/pihole-cloudsync.env
 ExecStart=/usr/local/bin/pihole-cloudsync --%i --branch $BRANCH --destdir $DESTDIR
+Slice=pihole-cloudsync.slice