diff --git a/src/lib/data/attachments.ts b/src/lib/data/attachments.ts
index ef8785f5..0524de9d 100644
--- a/src/lib/data/attachments.ts
+++ b/src/lib/data/attachments.ts
@@ -107,6 +107,7 @@ export const getAllAttachments = async ({
   planEntities,
   governingEntities,
   log,
+  skipValidation = false,
 }: {
   database: Database;
   planId: PlanId;
@@ -127,6 +128,13 @@ export const getAllAttachments = async ({
    */
   governingEntities: MapOfGoverningEntities;
   log: SharedLogContext;
+  /**
+   * Skip validation when fetching data from tables which have
+   * JSON columns, as those are expensive to verify.
+   *
+   * Also, skip type-checking attachment values against their types.
+   */
+  skipValidation?: boolean;
 }): Promise<AttachmentResults> => {
   const attachmentPrototypesById = await findAndOrganizeObjectsByUniqueProperty(
     database.attachmentPrototype,
@@ -138,6 +146,7 @@ export const getAllAttachments = async ({
             [Op.IN]: types,
           },
         },
+        skipValidation,
       }),
     'id'
   );
@@ -165,6 +174,7 @@ export const getAllAttachments = async ({
               ? { latestVersion: true }
               : { currentVersion: true }),
           },
+          skipValidation,
         }),
       'attachmentId'
     );
@@ -206,11 +216,22 @@ export const getAllAttachments = async ({
         })
       );
     }
-    const data = typeCheckAttachmentData({
-      attachment,
-      attachmentVersion,
-      log,
-    });
+
+    let data: AttachmentData;
+    if (!skipValidation) {
+      data = typeCheckAttachmentData({
+        attachment,
+        attachmentVersion,
+        log,
+      });
+    } else {
+      // Here, we sacrifice type-safety for speed, if `skipValidation` is enabled
+      data = {
+        type: attachment.type,
+        value: attachmentVersion.value,
+      } as unknown as AttachmentData;
+    }
+
     result.set(attachment.id, {
       id: attachment.id,
       customRef,
diff --git a/src/lib/data/governingEntities.ts b/src/lib/data/governingEntities.ts
index bb3657fc..b5bd073c 100644
--- a/src/lib/data/governingEntities.ts
+++ b/src/lib/data/governingEntities.ts
@@ -27,6 +27,7 @@ export const getAllGoverningEntitiesForPlan = async ({
   planId,
   version,
   prototypes,
+  skipValidation = false,
 }: {
   database: Database;
   planId: PlanId;
@@ -41,6 +42,11 @@ export const getAllGoverningEntitiesForPlan = async ({
     EntityPrototypeId,
     InstanceDataOfModel<Database['entityPrototype']>
   >;
+  /**
+   * Skip validation when fetching data from tables which have
+   * JSON columns, as those are expensive to verify
+   */
+  skipValidation?: boolean;
 }): Promise<MapOfGoverningEntities> => {
   const ges = await database.governingEntity.find({
     where: {
@@ -63,6 +69,7 @@ export const getAllGoverningEntitiesForPlan = async ({
             ? { latestVersion: true }
             : { currentVersion: true }),
         },
+        skipValidation,
       }),
     'governingEntityId'
   );
diff --git a/src/lib/data/planEntities.ts b/src/lib/data/planEntities.ts
index ecf122e5..4c92e794 100644
--- a/src/lib/data/planEntities.ts
+++ b/src/lib/data/planEntities.ts
@@ -44,6 +44,7 @@ export const getAndValidateAllPlanEntities = async ({
   version,
   prototypes,
   allowMissingPlanEntities,
+  skipValidation = false,
 }: {
   database: Database;
   planId: PlanId;
@@ -71,6 +72,11 @@ export const getAndValidateAllPlanEntities = async ({
    * This can happen for example when another entity is soft-deleted.
    */
   allowMissingPlanEntities?: boolean;
+  /**
+   * Skip validation when fetching data from tables which have
+   * JSON columns, as those are expensive to verify
+   */
+  skipValidation?: boolean;
 }): Promise<ValidatedPlanEntities> => {
   const planEntities = await database.planEntity.find({
     where: {
@@ -94,6 +100,7 @@ export const getAndValidateAllPlanEntities = async ({
             ? { latestVersion: true }
             : { currentVersion: true }),
         },
+        skipValidation,
       }),
     'planEntityId'
   );
diff --git a/src/lib/data/projects.ts b/src/lib/data/projects.ts
index 348306e6..ee957bed 100644
--- a/src/lib/data/projects.ts
+++ b/src/lib/data/projects.ts
@@ -258,6 +258,7 @@ export const getProjectBudgetsByOrgAndCluster = async <
   projects,
   log,
   ignoreInconsistentBudgets,
+  skipValidation = false,
 }: {
   database: Database;
   projects: Map<ProjectId, Data>;
@@ -273,6 +274,11 @@ export const getProjectBudgetsByOrgAndCluster = async <
    * to for example calculate a plan's overall requirements.
    */
   ignoreInconsistentBudgets?: true;
+  /**
+   * Skip validation when fetching data from tables which have
+   * JSON columns, as those are expensive to verify
+   */
+  skipValidation?: boolean;
 }): Promise<Map<ProjectId, ProjectBudgetSegmentBreakdown[]>> => {
   const projectVersionIds = [...projects.values()].map(
     (p) => p.projectVersion.id
@@ -298,6 +304,7 @@ export const getProjectBudgetsByOrgAndCluster = async <
         [Op.IN]: segments.map((s) => s.id),
       },
     },
+    skipValidation,
   });
 
   const breakdownsBySegment = groupObjectsByProperty(