diff --git a/plugins/XmlMaterialProfile/XmlMaterialProfile.py b/plugins/XmlMaterialProfile/XmlMaterialProfile.py
index c56c527f92..eb2bb2a788 100644
--- a/plugins/XmlMaterialProfile/XmlMaterialProfile.py
+++ b/plugins/XmlMaterialProfile/XmlMaterialProfile.py
@@ -1090,9 +1090,8 @@ class XmlMaterialProfile(InstanceContainer):
             # Skip material properties (eg diameter) or metadata (eg GUID)
             return
 
-        truth_map = { True: "yes", False: "no" }
-        if tag_name != "cura:setting" and instance.value in truth_map:
-            data = truth_map[instance.value]
+        if tag_name != "cura:setting" and isinstance(instance.value, bool):
+            data = "yes" if instance.value else "no"
         else:
             data = str(instance.value)
 
diff --git a/resources/definitions/creality_ender3v3se.def.json b/resources/definitions/creality_ender3v3se.def.json
index bf49d8dd1b..6248e5c851 100644
--- a/resources/definitions/creality_ender3v3se.def.json
+++ b/resources/definitions/creality_ender3v3se.def.json
@@ -36,9 +36,9 @@
         },
         "machine_heated_bed": { "default_value": true },
         "machine_height": { "default_value": 250 },
-        "machine_max_acceleration_e": { "value": 5000 },
-        "machine_max_acceleration_x": { "value": 5000.0 },
-        "machine_max_acceleration_y": { "value": 5000.0 },
+        "machine_max_acceleration_e": { "value": 2500 },
+        "machine_max_acceleration_x": { "value": 2500.0 },
+        "machine_max_acceleration_y": { "value": 2500.0 },
         "machine_max_acceleration_z": { "value": 500.0 },
         "machine_max_feedrate_e": { "value": 100 },
         "machine_max_feedrate_x": { "value": 500 },
diff --git a/resources/variants/creality/creality_crm4_0.2.inst.cfg b/resources/variants/creality/creality_crm4_0.2.inst.cfg
new file mode 100644
index 0000000000..4f9f76ac7a
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_0.2.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 0.2mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 0.2
+
diff --git a/resources/variants/creality/creality_crm4_0.3.inst.cfg b/resources/variants/creality/creality_crm4_0.3.inst.cfg
new file mode 100644
index 0000000000..f4145b1c5c
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_0.3.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 0.3mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 0.3
+
diff --git a/resources/variants/creality/creality_crm4_0.4.inst.cfg b/resources/variants/creality/creality_crm4_0.4.inst.cfg
new file mode 100644
index 0000000000..083efae740
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_0.4.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 0.4mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 0.4
+
diff --git a/resources/variants/creality/creality_crm4_0.5.inst.cfg b/resources/variants/creality/creality_crm4_0.5.inst.cfg
new file mode 100644
index 0000000000..1eea25e779
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_0.5.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 0.5mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 0.5
+
diff --git a/resources/variants/creality/creality_crm4_0.6.inst.cfg b/resources/variants/creality/creality_crm4_0.6.inst.cfg
new file mode 100644
index 0000000000..d24f24eece
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_0.6.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 0.6mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 0.6
+
diff --git a/resources/variants/creality/creality_crm4_0.8.inst.cfg b/resources/variants/creality/creality_crm4_0.8.inst.cfg
new file mode 100644
index 0000000000..f76a54078b
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_0.8.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 0.8mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 0.8
+
diff --git a/resources/variants/creality/creality_crm4_1.0.inst.cfg b/resources/variants/creality/creality_crm4_1.0.inst.cfg
new file mode 100644
index 0000000000..f8734d6f3c
--- /dev/null
+++ b/resources/variants/creality/creality_crm4_1.0.inst.cfg
@@ -0,0 +1,13 @@
+[general]
+definition = creality_crm4
+name = 1.0mm Nozzle
+version = 4
+
+[metadata]
+hardware_type = nozzle
+setting_version = 23
+type = variant
+
+[values]
+machine_nozzle_size = 1.0
+