diff --git a/web/components/bets-list.tsx b/web/components/bets-list.tsx
index 5d595cf7..9bad3627 100644
--- a/web/components/bets-list.tsx
+++ b/web/components/bets-list.tsx
@@ -553,10 +553,11 @@ function BetRow(props: { bet: Bet; contract: Contract; saleBet?: Bet }) {
   )
 }
 
+const warmUpSellBet = _.throttle(() => sellBet({}).catch(), 5000 /* ms */)
+
 function SellButton(props: { contract: Contract; bet: Bet }) {
   useEffect(() => {
-    // warm up cloud function
-    sellBet({}).catch()
+    warmUpSellBet()
   }, [])
 
   const { contract, bet } = props
diff --git a/web/lib/firebase/users.ts b/web/lib/firebase/users.ts
index e07d138c..8b8523c6 100644
--- a/web/lib/firebase/users.ts
+++ b/web/lib/firebase/users.ts
@@ -77,11 +77,13 @@ const CACHED_USER_KEY = 'CACHED_USER_KEY'
 // used to avoid weird race condition
 let createUserPromise: Promise<User | null> | undefined = undefined
 
+const warmUpCreateUser = _.throttle(createUser, 5000 /* ms */)
+
 export function listenForLogin(onUser: (user: User | null) => void) {
   const cachedUser = localStorage.getItem(CACHED_USER_KEY)
   onUser(cachedUser ? JSON.parse(cachedUser) : null)
 
-  if (!cachedUser) createUser() // warm up cloud function
+  if (!cachedUser) warmUpCreateUser()
 
   return onAuthStateChanged(auth, async (fbUser) => {
     if (fbUser) {