diff --git a/installer/lib/installer.py b/installer/lib/installer.py
index e1ca8c2e8f..f15c83ba66 100644
--- a/installer/lib/installer.py
+++ b/installer/lib/installer.py
@@ -168,7 +168,10 @@ class Installer:
 
         messages.welcome()
 
-        self.dest = Path(root).expanduser().resolve() if yes_to_all else messages.dest_path(root)
+        invokeai_root = os.environ.get('INVOKEAI_ROOT')
+        default_path = invokeai_root or Path(root).expanduser().resolve()
+
+        self.dest = default_path if yes_to_all else messages.dest_path(root)
 
         # create the venv for the app
         self.venv = self.app_venv()
diff --git a/invokeai/frontend/install/model_install.py b/invokeai/frontend/install/model_install.py
index ea9efe1908..78dd0f88d0 100644
--- a/invokeai/frontend/install/model_install.py
+++ b/invokeai/frontend/install/model_install.py
@@ -58,6 +58,8 @@ logger = InvokeAILogger.getLogger()
 # from https://stackoverflow.com/questions/92438/stripping-non-printable-characters-from-a-string-in-python
 NOPRINT_TRANS_TABLE = {i: None for i in range(0, sys.maxunicode + 1) if not chr(i).isprintable()}
 
+# maximum number of installed models we can display before overflowing vertically
+MAX_OTHER_MODELS = 72
 
 def make_printable(s: str) -> str:
     """Replace non-printable characters in a string"""
@@ -271,6 +273,11 @@ class addModelsForm(CyclingForm, npyscreen.FormMultiPage):
                 )
             )
 
+            truncation = False
+            if len(model_labels) > MAX_OTHER_MODELS:
+                model_labels = model_labels[0:MAX_OTHER_MODELS]
+                truncation = True
+
             widgets.update(
                 models_selected=self.add_widget_intelligent(
                     MultiSelectColumns,
@@ -289,6 +296,16 @@ class addModelsForm(CyclingForm, npyscreen.FormMultiPage):
                 models=model_list,
             )
 
+        if truncation:
+            widgets.update(
+                warning_message = self.add_widget_intelligent(
+                    npyscreen.FixedText,
+                    value=f"Too many models to display (max={MAX_OTHER_MODELS}). Some are not displayed.",
+                    editable=False,
+                    color="CAUTION",
+                )
+            )
+
         self.nextrely += 1
         widgets.update(
             download_ids=self.add_widget_intelligent(