diff --git a/modules/shared.py b/modules/shared.py
index e7d504a3b..d1f605053 100644
--- a/modules/shared.py
+++ b/modules/shared.py
@@ -1,8 +1,8 @@
-import datetime
-import json
 import os
 import sys
 import time
+import json
+import datetime
 
 import gradio as gr
 import tqdm
@@ -321,23 +321,12 @@ options_templates.update(options_section(('saving-paths', "Image Paths"), {
     "outdir_save": OptionInfo("outputs/save", "Directory for saving images using the Save button", component_args=hide_dirs),
 }))
 
-cuda_dtype = OptionInfo("FP16", "Device precision type", gr.Radio, lambda: {"choices": ["FP32", "FP16", "BF16"]})
-no_half = OptionInfo(False, "Use full precision for model (--no-half)")
-no_half_vae = OptionInfo(False, "Use full precision for VAE (--no-half-vae)")
-upcast_sampling = OptionInfo(False,
-                             "Enable upcast sampling. Usually produces similar results to --no-half with better performance while using less memory")
-# support for macOS.
-if sys.platform == "darwin":
-    cuda_dtype.default = "FP32"
-    upcast_sampling.default = True
-
-
 options_templates.update(options_section(('cuda', "CUDA Settings"), {
     "precision": OptionInfo("Autocast", "Precision type", gr.Radio, lambda: {"choices": ["Autocast", "Full"]}),
-    "cuda_dtype": cuda_dtype,
-    "no_half": no_half,
-    "no_half_vae": no_half_vae,
-    "upcast_sampling": upcast_sampling,
+    "cuda_dtype": OptionInfo("FP32" if sys.platform == "darwin" else "FP16", "Device precision type", gr.Radio, lambda: {"choices": ["FP32", "FP16", "BF16"]}),
+    "no_half": OptionInfo(False, "Use full precision for model (--no-half)"),
+    "no_half_vae": OptionInfo(False, "Use full precision for VAE (--no-half-vae)"),
+    "upcast_sampling": OptionInfo(True if sys.platform == "darwin" else False, "Enable upcast sampling. Usually produces similar results to --no-half with better performance while using less memory"),
     "disable_nan_check": OptionInfo(True, "Do not check if produced images/latent spaces have NaN values"),
     "rollback_vae": OptionInfo(False, "Attempt to roll back VAE when produced NaN values, requires NaN check (experimental)"),
     "opt_channelslast": OptionInfo(False, "Use channels last as torch memory format "),
diff --git a/webui.py b/webui.py
index a0d8f81b8..20c621818 100644
--- a/webui.py
+++ b/webui.py
@@ -1,9 +1,11 @@
 import os
 import re
+import sys
 import time
 import signal
-import warnings
+import asyncio
 import logging
+import warnings
 from rich import print # pylint: disable=W0622
 from modules import timer, errors
 
@@ -166,9 +168,25 @@ def create_api(app):
     return api
 
 
+def async_policy():
+    _BasePolicy = asyncio.WindowsSelectorEventLoopPolicy if sys.platform == "win32" and hasattr(asyncio, "WindowsSelectorEventLoopPolicy") else asyncio.DefaultEventLoopPolicy
+
+    class AnyThreadEventLoopPolicy(_BasePolicy):
+        def get_event_loop(self) -> asyncio.AbstractEventLoop:
+            try:
+                return super().get_event_loop()
+            except (RuntimeError, AssertionError):
+                loop = self.new_event_loop()
+                self.set_event_loop(loop)
+                return loop
+
+    asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy())
+
+
 def start_ui():
     logging.disable(logging.INFO)
     create_paths(opts)
+    async_policy()
     initialize()
     if shared.opts.clean_temp_dir_at_start:
         ui_tempdir.cleanup_tmpdr()