diff --git a/modules/models_settings.py b/modules/models_settings.py
index 15ff2830..f0767b1d 100644
--- a/modules/models_settings.py
+++ b/modules/models_settings.py
@@ -26,6 +26,23 @@ def get_fallback_settings():
     }
 
 
+def get_loader_defaults():
+    '''
+    Returns default values for all loader parameters from shared.args_defaults.
+    Used to reset UI when switching to a model without saved settings.
+    '''
+    defaults = {}
+    for param in loaders.get_all_params():
+        if hasattr(shared.args_defaults, param):
+            value = getattr(shared.args_defaults, param)
+            if value is None and param in ('tensor_split', 'gpu_split', 'extra_flags', 'device_draft'):
+                value = ''
+            elif value is None and param in ('model_draft', 'mmproj'):
+                value = 'None'
+            defaults[param] = value
+    return defaults
+
+
 def get_model_metadata(model):
     model_path = resolve_model_path(model)
     model_settings = {}
@@ -253,6 +270,12 @@ def apply_model_settings_to_state(model, state):
     '''
     UI: update the state variable with the model settings
     '''
+    # Reset loader parameters to defaults before applying model-specific settings
+    loader_defaults = get_loader_defaults()
+    for k, v in loader_defaults.items():
+        if k in state:
+            state[k] = v
+
     model_settings = get_model_metadata(model)
     if 'loader' in model_settings:
         loader = model_settings.pop('loader')
@@ -472,7 +495,7 @@ def get_nvidia_vram(return_free=True):
         return -1
 
 
-def update_gpu_layers_and_vram(loader, model, gpu_layers, ctx_size, cache_type, auto_adjust=False, for_ui=True):
+def update_gpu_layers_and_vram(loader, model, gpu_layers, ctx_size, cache_type, lock_settings=False, auto_adjust=False, for_ui=True):
     """
     Unified function to handle GPU layers and VRAM updates.
 
@@ -483,12 +506,16 @@ def update_gpu_layers_and_vram(loader, model, gpu_layers, ctx_size, cache_type,
         - If for_ui=True: (vram_info_update, gpu_layers_update) or just vram_info_update
         - If for_ui=False: (vram_usage, adjusted_layers) or just vram_usage
     """
+    should_adjust = auto_adjust
+    if lock_settings and should_adjust:
+        should_adjust = False
+
     if loader != 'llama.cpp' or model in ["None", None] or not model.endswith(".gguf"):
         vram_info = "<div id=\"vram-info\"'>Estimated VRAM to load the model:</div>"
         if for_ui:
             return (vram_info, gr.update()) if auto_adjust else vram_info
         else:
-            return (0, gpu_layers) if auto_adjust else 0
+            return (0, gpu_layers) if should_adjust else 0
 
     # Get model settings including user preferences
     model_settings = get_model_metadata(model)
@@ -496,7 +523,7 @@ def update_gpu_layers_and_vram(loader, model, gpu_layers, ctx_size, cache_type,
     current_layers = gpu_layers
     max_layers = model_settings.get('max_gpu_layers', 256)
 
-    if auto_adjust:
+    if should_adjust:
         # Check if this is a user-saved setting
         user_config = shared.user_config
         model_regex = Path(model).name + '$'
@@ -521,7 +548,10 @@ def update_gpu_layers_and_vram(loader, model, gpu_layers, ctx_size, cache_type,
     if for_ui:
         vram_info = f"<div id=\"vram-info\"'>Estimated VRAM to load the model: <span class=\"value\">{vram_usage:.0f} MiB</span></div>"
         if auto_adjust:
-            return vram_info, gr.update(value=current_layers, maximum=max_layers)
+            if should_adjust:
+                return vram_info, gr.update(value=current_layers, maximum=max_layers)
+            else:
+                return vram_info, gr.update()
         else:
             return vram_info
     else:
diff --git a/modules/ui_model_menu.py b/modules/ui_model_menu.py
index 86adc229..e3889d86 100644
--- a/modules/ui_model_menu.py
+++ b/modules/ui_model_menu.py
@@ -41,6 +41,7 @@ def create_ui():
                     gr.Markdown("## Main options")
                     with gr.Row():
                         with gr.Column():
+                            shared.gradio['lock_model_settings'] = gr.Checkbox(label="Lock settings", value=False, info='Prevent automatic changes to loader settings')
                             shared.gradio['gpu_layers'] = gr.Slider(label="gpu-layers", minimum=0, maximum=get_initial_gpu_layers_max(), step=1, value=shared.args.gpu_layers, info='Must be greater than 0 for the GPU to be used. ⚠️ Lower this value if you can\'t load the model.')
                             shared.gradio['ctx_size'] = gr.Slider(label='ctx-size', minimum=256, maximum=131072, step=256, value=shared.args.ctx_size, info='Context length. Common values: 4096, 8192, 16384, 32768, 65536, 131072.')
                             shared.gradio['gpu_split'] = gr.Textbox(label='gpu-split', info='Comma-separated list of VRAM (in GB) to use per GPU. Example: 20,7,7')
@@ -146,7 +147,7 @@ def create_event_handlers():
     # with the model defaults (if any), and then the model is loaded
     shared.gradio['model_menu'].change(
         ui.gather_interface_values, gradio(shared.input_elements), gradio('interface_state')).then(
-        handle_load_model_event_initial, gradio('model_menu', 'interface_state'), gradio(ui.list_interface_input_elements()) + gradio('interface_state') + gradio('vram_info'), show_progress=False).then(
+        handle_load_model_event_initial, gradio('model_menu', 'interface_state', 'lock_model_settings'), gradio(ui.list_interface_input_elements()) + gradio('interface_state') + gradio('vram_info'), show_progress=False).then(
         partial(load_model_wrapper, autoload=False), gradio('model_menu', 'loader'), gradio('model_status'), show_progress=True).success(
         handle_load_model_event_final, gradio('truncation_length', 'loader', 'interface_state'), gradio('truncation_length', 'filter_by_loader'), show_progress=False)
 
@@ -157,7 +158,7 @@ def create_event_handlers():
         handle_load_model_event_final, gradio('truncation_length', 'loader', 'interface_state'), gradio('truncation_length', 'filter_by_loader'), show_progress=False)
 
     shared.gradio['unload_model'].click(handle_unload_model_click, None, gradio('model_status'), show_progress=False).then(
-        partial(update_gpu_layers_and_vram, auto_adjust=True), gradio('loader', 'model_menu', 'gpu_layers', 'ctx_size', 'cache_type'), gradio('vram_info', 'gpu_layers'), show_progress=False)
+        partial(update_gpu_layers_and_vram, auto_adjust=True), gradio('loader', 'model_menu', 'gpu_layers', 'ctx_size', 'cache_type', 'lock_model_settings'), gradio('vram_info', 'gpu_layers'), show_progress=False)
 
     shared.gradio['save_model_settings'].click(
         ui.gather_interface_values, gradio(shared.input_elements), gradio('interface_state')).then(
@@ -167,7 +168,7 @@ def create_event_handlers():
     for param in ['ctx_size', 'cache_type']:
         shared.gradio[param].change(
             partial(update_gpu_layers_and_vram, auto_adjust=True),
-            gradio('loader', 'model_menu', 'gpu_layers', 'ctx_size', 'cache_type'),
+            gradio('loader', 'model_menu', 'gpu_layers', 'ctx_size', 'cache_type', 'lock_model_settings'),
             gradio('vram_info', 'gpu_layers'), show_progress=False)
 
     # For manual gpu_layers changes - only update VRAM
@@ -176,6 +177,12 @@ def create_event_handlers():
         gradio('loader', 'model_menu', 'gpu_layers', 'ctx_size', 'cache_type'),
         gradio('vram_info'), show_progress=False)
 
+    # When lock is unchecked, apply settings for current model
+    shared.gradio['lock_model_settings'].change(
+        ui.gather_interface_values, gradio(shared.input_elements), gradio('interface_state')).then(
+        handle_unlock_settings, gradio('model_menu', 'interface_state', 'lock_model_settings'),
+        gradio(ui.list_interface_input_elements()) + gradio('interface_state') + gradio('vram_info'), show_progress=False)
+
     if not shared.args.portable:
         shared.gradio['lora_menu_apply'].click(load_lora_wrapper, gradio('lora_menu'), gradio('model_status'), show_progress=False)
 
@@ -401,8 +408,9 @@ def get_initial_gpu_layers_max():
     return 256
 
 
-def handle_load_model_event_initial(model, state):
-    state = apply_model_settings_to_state(model, state)
+def handle_load_model_event_initial(model, state, lock_settings):
+    if not lock_settings:
+        state = apply_model_settings_to_state(model, state)
     output = ui.apply_interface_values(state)
     update_model_parameters(state)  # This updates the command-line flags
 
@@ -410,6 +418,15 @@ def handle_load_model_event_initial(model, state):
     return output + [state] + [vram_info]
 
 
+def handle_unlock_settings(model, state, lock_settings):
+    if not lock_settings:
+        state = apply_model_settings_to_state(model, state)
+        output = ui.apply_interface_values(state)
+        vram_info = state.get('vram_info', "<div id=\"vram-info\"'>Estimated VRAM to load the model:</div>")
+        return output + [state] + [vram_info]
+    return [gr.update()] * len(ui.list_interface_input_elements()) + [state, gr.update()]
+
+
 def handle_load_model_event_final(truncation_length, loader, state):
     truncation_length = update_truncation_length(truncation_length, state)
     return [truncation_length, loader]