diff --git a/nemo/collections/llm/gpt/model/mixtral.py b/nemo/collections/llm/gpt/model/mixtral.py
index 919705fc02f1..8b1c8d62ebd6 100644
--- a/nemo/collections/llm/gpt/model/mixtral.py
+++ b/nemo/collections/llm/gpt/model/mixtral.py
@@ -70,7 +70,8 @@ class MixtralConfig(GPTConfig):
     rotary_base: float = 1000000.0
     bf16: bool = True
     params_dtype: torch.dtype = torch.bfloat16
-
+    apply_rope_fusion: bool = True
+    bias_activation_fusion: bool = True
 
 @dataclass
 class MixtralConfig8x3B(MixtralConfig):
diff --git a/nemo/collections/llm/recipes/nemotron4_15b.py b/nemo/collections/llm/recipes/nemotron4_15b.py
index 49f92fcc1616..1db257ece889 100644
--- a/nemo/collections/llm/recipes/nemotron4_15b.py
+++ b/nemo/collections/llm/recipes/nemotron4_15b.py
@@ -25,6 +25,9 @@
 from nemo.collections.llm.recipes.log.default import default_log, default_resume, tensorboard_logger
 from nemo.collections.llm.recipes.nemotron import nemotron_model, nemotron_trainer
 from nemo.collections.llm.recipes.optim.adam import distributed_fused_adam_with_cosine_annealing
+from nemo.collections.llm.recipes.tp_overlap_configs.userbuffers import (
+    userbuffers_bf16_h100_h8192_tp2_mbs1_seqlen8192
+)
 from nemo.lightning.pytorch.callbacks.megatron_comm_overlap import MegatronCommOverlapCallback
 from nemo.utils.exp_manager import TimingCallback
 
@@ -202,6 +205,7 @@ def pretrain_performance_optimizations(recipe: run.Partial) -> run.Partial:
         run.Config(
             MegatronCommOverlapCallback,
             tp_comm_overlap=True,
+            tp_comm_overlap_cfg=userbuffers_bf16_h100_h8192_tp2_mbs1_seqlen8192,
         )
     )
     return recipe
diff --git a/nemo/collections/llm/recipes/nemotron4_340b.py b/nemo/collections/llm/recipes/nemotron4_340b.py
index 14d4c0f32d11..e397c7ed75bd 100644
--- a/nemo/collections/llm/recipes/nemotron4_340b.py
+++ b/nemo/collections/llm/recipes/nemotron4_340b.py
@@ -25,6 +25,9 @@
 from nemo.collections.llm.recipes.log.default import default_log, default_resume, tensorboard_logger
 from nemo.collections.llm.recipes.nemotron import nemotron_model, nemotron_trainer
 from nemo.collections.llm.recipes.optim.adam import distributed_fused_adam_with_cosine_annealing
+from nemo.collections.llm.recipes.tp_overlap_configs.userbuffers import (
+    userbuffers_bf16_h100_h18432_tp8_mbs1_seqlen4096
+)
 from nemo.lightning.pytorch.callbacks.megatron_comm_overlap import MegatronCommOverlapCallback
 from nemo.utils.exp_manager import TimingCallback
 
@@ -209,6 +212,7 @@ def pretrain_performance_optimizations(recipe: run.Partial) -> run.Partial:
         run.Config(
             MegatronCommOverlapCallback,
             tp_comm_overlap=True,
+            tp_comm_overlap_cfg=userbuffers_bf16_h100_h18432_tp8_mbs1_seqlen4096,
             defer_embedding_wgrad_compute=True,
             wgrad_deferral_limit=22,
             overlap_param_gather_with_optimizer_step=False,  # Currently disabled due to an issue with checkpointing
diff --git a/nemo/collections/llm/recipes/tp_overlap_configs/userbuffers.py b/nemo/collections/llm/recipes/tp_overlap_configs/userbuffers.py
index e9cc0b5825c7..de7ee4c9c889 100644
--- a/nemo/collections/llm/recipes/tp_overlap_configs/userbuffers.py
+++ b/nemo/collections/llm/recipes/tp_overlap_configs/userbuffers.py
@@ -182,3 +182,17 @@ class TransformerLayerTPOverlapCfg:
     proj_fprop=PipelineOverlapCfg(num_sm=24, cga_size=2, num_splits=4, set_sm_margin=True, fp8_buf=True),
     fc2_fprop=RingExchangeOverlapCfg(num_sm=1, set_sm_margin=True),
 )
+
+# Nemotron 340B
+userbuffers_bf16_h100_h18432_tp8_mbs1_seqlen4096 = TransformerLayerTPOverlapCfg(
+    qkv_dgrad=BulkOverlapCfg(num_sm=8, cga_size=2, set_sm_margin=False),
+    qkv_wgrad=BulkOverlapCfg(num_sm=32, cga_size=2, set_sm_margin=False),
+    fc1_dgrad=BulkOverlapCfg(num_sm=2, cga_size=2, set_sm_margin=False),
+    fc1_wgrad=BulkOverlapCfg(num_sm=8, cga_size=2, set_sm_margin=False),
+    qkv_fprop=RingExchangeOverlapCfg(aggregate=False),
+    proj_dgrad=RingExchangeOverlapCfg(aggregate=False),
+    fc1_fprop=RingExchangeOverlapCfg(aggregate=False),
+    fc2_dgrad=RingExchangeOverlapCfg(aggregate=False),
+    proj_fprop=PipelineOverlapCfg(num_sm=32, cga_size=2, num_splits=2, set_sm_margin=True, fp8_buf=True),
+    fc2_fprop=PipelineOverlapCfg(num_sm=24, cga_size=2, num_splits=4, set_sm_margin=True, fp8_buf=True),
+)