diff --git a/packages/hydrooj/src/model/schedule.ts b/packages/hydrooj/src/model/schedule.ts
index 41611f956..7804057d1 100644
--- a/packages/hydrooj/src/model/schedule.ts
+++ b/packages/hydrooj/src/model/schedule.ts
@@ -70,7 +70,7 @@ class WorkerService extends Service {
                 const start = Date.now();
                 await Promise.race([
                     this.handlers[doc.subType](doc),
-                    sleep(300000),
+                    sleep(1200000),
                 ]);
                 const spent = Date.now() - start;
                 if (spent > 500) logger.warn('Slow worker task (%d ms): %o', spent, doc);
diff --git a/packages/hydrooj/src/model/user.ts b/packages/hydrooj/src/model/user.ts
index ad56f0919..05457bfba 100644
--- a/packages/hydrooj/src/model/user.ts
+++ b/packages/hydrooj/src/model/user.ts
@@ -346,13 +346,22 @@ class UserModel {
     }
 
     static async getListForRender(domainId: string, uids: number[]) {
-        const [udocs, dudocs] = await Promise.all([
-            UserModel.getMulti({ _id: { $in: uids } }, ['_id', 'uname', 'avatar', 'school', 'studentId']).toArray(),
+        const [udocs, vudocs, dudocs] = await Promise.all([
+            UserModel.getMulti({ _id: { $in: uids } }, ['_id', 'uname', 'mail', 'avatar', 'school', 'studentId']).toArray(),
+            collV.find({ _id: { $in: uids } }).toArray(),
             domain.getDomainUserMulti(domainId, uids).project({ uid: 1, displayName: 1 }).toArray(),
         ]);
         const udict = {};
         for (const udoc of udocs) udict[udoc._id] = udoc;
+        for (const udoc of vudocs) udict[udoc._id] = udoc;
         for (const dudoc of dudocs) udict[dudoc.uid].displayName = dudoc.displayName;
+        for (const uid of uids) udict[uid] ||= { ...UserModel.defaultUser };
+        for (const key in udict) {
+            udict[key].school ||= '';
+            udict[key].studentId ||= '';
+            udict[key].displayName ||= udict[key].uname;
+            udict[key].avatar = `gravatar:${udict[key].mail}`;
+        }
         return udict as BaseUserDict;
     }