diff --git a/test/regression/cases/file_to_blackhole_0ms_latency/lading/lading.yaml b/test/regression/cases/file_to_blackhole_0ms_latency/lading/lading.yaml
index bf1e2fdae573c..639cdb3b546aa 100644
--- a/test/regression/cases/file_to_blackhole_0ms_latency/lading/lading.yaml
+++ b/test/regression/cases/file_to_blackhole_0ms_latency/lading/lading.yaml
@@ -5,7 +5,7 @@ generator:
                59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131]
         load_profile:
           constant: 10MB
-        concurrent_logs: 8
+        concurrent_logs: 1
         maximum_bytes_per_log: 500MB
         total_rotations: 5
         max_depth: 0
diff --git a/test/regression/cases/file_to_blackhole_1000ms_latency/lading/lading.yaml b/test/regression/cases/file_to_blackhole_1000ms_latency/lading/lading.yaml
index b5b2447de1b08..0bc009d7a59fd 100644
--- a/test/regression/cases/file_to_blackhole_1000ms_latency/lading/lading.yaml
+++ b/test/regression/cases/file_to_blackhole_1000ms_latency/lading/lading.yaml
@@ -5,7 +5,7 @@ generator:
                59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131]
         load_profile:
           constant: 10MB
-        concurrent_logs: 8
+        concurrent_logs: 1
         maximum_bytes_per_log: 500MB
         total_rotations: 5
         max_depth: 0
diff --git a/test/regression/cases/file_to_blackhole_1000ms_latency_linear_load/lading/lading.yaml b/test/regression/cases/file_to_blackhole_1000ms_latency_linear_load/lading/lading.yaml
index b316d44e00fb9..ca47af7871228 100644
--- a/test/regression/cases/file_to_blackhole_1000ms_latency_linear_load/lading/lading.yaml
+++ b/test/regression/cases/file_to_blackhole_1000ms_latency_linear_load/lading/lading.yaml
@@ -12,7 +12,7 @@ generator:
             # Agent is not expected to keep up.
             initial_bytes_per_second: 10MB
             rate: 0.5MB
-        concurrent_logs: 8
+        concurrent_logs: 1
         maximum_bytes_per_log: 500MB
         total_rotations: 5
         max_depth: 0
diff --git a/test/regression/cases/file_to_blackhole_100ms_latency/lading/lading.yaml b/test/regression/cases/file_to_blackhole_100ms_latency/lading/lading.yaml
index bd1b8be967ffc..ebf0840ef0b38 100644
--- a/test/regression/cases/file_to_blackhole_100ms_latency/lading/lading.yaml
+++ b/test/regression/cases/file_to_blackhole_100ms_latency/lading/lading.yaml
@@ -5,7 +5,7 @@ generator:
                59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131]
         load_profile:
           constant: 10MB
-        concurrent_logs: 8
+        concurrent_logs: 1
         maximum_bytes_per_log: 500MB
         total_rotations: 5
         max_depth: 0
diff --git a/test/regression/cases/file_to_blackhole_300ms_latency/lading/lading.yaml b/test/regression/cases/file_to_blackhole_300ms_latency/lading/lading.yaml
index e32360a6a9856..dc1b59d89d8a5 100644
--- a/test/regression/cases/file_to_blackhole_300ms_latency/lading/lading.yaml
+++ b/test/regression/cases/file_to_blackhole_300ms_latency/lading/lading.yaml
@@ -5,7 +5,7 @@ generator:
                59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131]
         load_profile:
           constant: 10MB
-        concurrent_logs: 8
+        concurrent_logs: 1
         maximum_bytes_per_log: 500MB
         total_rotations: 5
         max_depth: 0
diff --git a/test/regression/cases/file_to_blackhole_500ms_latency/lading/lading.yaml b/test/regression/cases/file_to_blackhole_500ms_latency/lading/lading.yaml
index 87d7548924fcd..2d1b4fa83048b 100644
--- a/test/regression/cases/file_to_blackhole_500ms_latency/lading/lading.yaml
+++ b/test/regression/cases/file_to_blackhole_500ms_latency/lading/lading.yaml
@@ -5,7 +5,7 @@ generator:
                59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131]
         load_profile:
           constant: 10MB
-        concurrent_logs: 8
+        concurrent_logs: 1
         maximum_bytes_per_log: 500MB
         total_rotations: 5
         max_depth: 0