diff --git a/openpype/hosts/max/addon.py b/openpype/hosts/max/addon.py
index d3245bbc7e..9d6ab5a8b3 100644
--- a/openpype/hosts/max/addon.py
+++ b/openpype/hosts/max/addon.py
@@ -12,6 +12,11 @@ class MaxAddon(OpenPypeModule, IHostAddon):
     def initialize(self, module_settings):
         self.enabled = True
 
+    def add_implementation_envs(self, env, _app):
+        # Remove auto screen scale factor for Qt
+        # - let 3dsmax decide it's value
+        env.pop("QT_AUTO_SCREEN_SCALE_FACTOR", None)
+
     def get_workfile_extensions(self):
         return [".max"]
 
diff --git a/openpype/hosts/max/startup/startup.py b/openpype/hosts/max/startup/startup.py
index 37bcef5db1..0d3135a16f 100644
--- a/openpype/hosts/max/startup/startup.py
+++ b/openpype/hosts/max/startup/startup.py
@@ -1,4 +1,13 @@
 # -*- coding: utf-8 -*-
+import os
+import sys
+
+# this might happen in some 3dsmax version where PYTHONPATH isn't added
+# to sys.path automatically
+for path in os.environ["PYTHONPATH"].split(os.pathsep):
+    if path and path not in sys.path:
+        sys.path.append(path)
+
 from openpype.hosts.max.api import MaxHost
 from openpype.pipeline import install_host