diff --git a/src/main/kotlin/solve/rendering/engine/core/renderers/FramesRenderer.kt b/src/main/kotlin/solve/rendering/engine/core/renderers/FramesRenderer.kt
index f7632071..f98658d0 100644
--- a/src/main/kotlin/solve/rendering/engine/core/renderers/FramesRenderer.kt
+++ b/src/main/kotlin/solve/rendering/engine/core/renderers/FramesRenderer.kt
@@ -26,7 +26,7 @@ import solve.rendering.engine.utils.toIntVector
 import solve.scene.controller.SceneController
 import solve.scene.model.VisualizationFrame
 import solve.utils.ceilToInt
-import java.util.Collections.synchronizedList
+import java.util.concurrent.CopyOnWriteArrayList
 import kotlin.math.abs
 import kotlin.math.min
 
@@ -58,7 +58,7 @@ class FramesRenderer(
 
     private var cameraLastGridCellPosition = getScreenCenterGridCellPosition()
 
-    private val bufferFramesToUpload = synchronizedList<LoadedBufferFrameData>(mutableListOf())
+    private val bufferFramesToUpload = CopyOnWriteArrayList<LoadedBufferFrameData>(mutableListOf())
     private val framesLoadingCoroutineScope = CoroutineScope(Dispatchers.Default)
 
     private var needToReinitializeBuffers = false
@@ -166,9 +166,7 @@ class FramesRenderer(
 
     private fun uploadLoadedFramesToBuffers() {
         bufferFramesToUpload.forEach { frame ->
-            synchronized(bufferFramesToUpload) {
-                bufferFramesToUpload.remove(frame)
-            }
+            bufferFramesToUpload.remove(frame)
             bufferFramesArrayTexture?.uploadTexture(frame.textureData, frame.bufferIndex)
             Texture2D.freeData(frame.textureData)
         }
@@ -293,9 +291,7 @@ class FramesRenderer(
                 return@launch
             }
 
-            synchronized(bufferFramesToUpload) {
-                bufferFramesToUpload.add(LoadedBufferFrameData(textureData, index))
-            }
+            bufferFramesToUpload.add(LoadedBufferFrameData(textureData, index))
         }
     }
 
diff --git a/src/main/kotlin/solve/scene/SceneFacade.kt b/src/main/kotlin/solve/scene/SceneFacade.kt
index 6eedd2ab..46a0173c 100644
--- a/src/main/kotlin/solve/scene/SceneFacade.kt
+++ b/src/main/kotlin/solve/scene/SceneFacade.kt
@@ -25,7 +25,7 @@ import tornadofx.find
  * Transforms common application data models into scene data and applies it.
  */
 object SceneFacade {
-    val lastVisualizationKeepSettingsProperty = SimpleObjectProperty(false)
+    val lastVisualizationKeepSettingsProperty = SimpleObjectProperty(true)
     private var lastVisualizationKeepSettings: Boolean
         get() = lastVisualizationKeepSettingsProperty.value
         private set(value) {