string.intern:

ragfair offer user nickname
Quest condition type

Libraries/SPTarkov.Server.Core/Models/Eft/Common/Tables/Quest.cs

@@ -174,6 +174,8 @@ public record QuestConditionTypes
 
 public record QuestCondition
 {
+    private string _conditionType;
+
     [JsonExtensionData]
     public Dictionary<string, object>? ExtensionData { get; set; }
 
@@ -268,7 +270,11 @@ public record QuestCondition
     public bool? IsEncoded { get; set; }
 
     [JsonPropertyName("conditionType")]
-    public required string ConditionType { get; set; }
+    public required string ConditionType
+    {
+        get { return _conditionType; }
+        set { _conditionType = string.Intern(value); }
+    }
 
     [JsonPropertyName("areaType")]
     public HideoutAreas? AreaType { get; set; }

Libraries/SPTarkov.Server.Core/Models/Eft/Ragfair/RagfairOffer.cs

@@ -120,16 +120,20 @@ public record OfferRequirement
 
 public record RagfairOfferUser
 {
+    private string? _nickname;
+
     [JsonExtensionData]
     public Dictionary<string, object>? ExtensionData { get; set; }
 
-    private string? _id;
-
     [JsonPropertyName("id")]
     public MongoId Id { get; set; }
 
     [JsonPropertyName("nickname")]
-    public string? Nickname { get; set; }
+    public string? Nickname
+    {
+        get { return _nickname; }
+        set { _nickname = value == null ? null : string.Intern(value); }
+    }
 
     [JsonPropertyName("rating")]
     public double? Rating { get; set; }