diff --git a/src/slic3r/GUI/3DScene.cpp b/src/slic3r/GUI/3DScene.cpp
index 595f6f6a8..6b1df6ab3 100644
--- a/src/slic3r/GUI/3DScene.cpp
+++ b/src/slic3r/GUI/3DScene.cpp
@@ -2003,7 +2003,7 @@ bool GLBed::on_init_from_file(const std::string& filename, bool useVBOs)
     else
         m_volume.indexed_vertex_array.load_mesh_flat_shading(mesh);
 
-    float color[4] = { 0.235f, 0.235f, 0.235f, 0.5f };
+    float color[4] = { 0.235f, 0.235f, 0.235f, 1.0f };
     set_color(color, 4);
 
     m_volume.bounding_box = m_volume.indexed_vertex_array.bounding_box();
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 8facf3879..69a3ea2bd 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -599,6 +599,10 @@ void GLCanvas3D::Bed::_render_prusa(const std::string &key, float theta) const
     // use higher resolution images if graphic card allows
     GLint max_tex_size;
     ::glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_tex_size);
+
+    // temporary set to lowest resolution
+    max_tex_size = 2048;
+
     if (max_tex_size >= 8192)
         tex_path += "_8192";
     else if (max_tex_size >= 4096)