Skip to main content
Contributor I
Sep 16, 2026 11:12 PM UTC
Solved

Why is the Klaviyo so PAINFULLY SLOW pretty much all the time?

I am on 3TB internet with the fastest equipment. Klaviyo is SOOOOO SLOOOOW! I am waiting all the time for it to do pretty much anything. It must be the browser interface that lacks so badly. Speed matters folks. Figure out how to do it better and FASTER!

KeviSunshine
Expert Problem Solver III
Sep 17, 2026 11:20 AM UTC

Is it always like this for you? We experience a ton of intermittent Klaviyo errors–occasional slowness, whitescreens, UI oddities, etc. but it generally resolves over time and goes back to normal. And normal is not lightning quick, but not too bad. What’s your “normal”? Is it always slow?

Also, are there any screens that standout for their slowness? From my experience opening flows with a lot of nodes is slow, and sometimes opening/editing templates. Curious if there are any particular pages you experience problems with?

 

All the best,

Kevin.

4 replies

KeviSunshine
Expert Problem Solver III
Expert Problem Solver III
Sep 17, 2026 11:20 AM UTC

Is it always like this for you? We experience a ton of intermittent Klaviyo errors–occasional slowness, whitescreens, UI oddities, etc. but it generally resolves over time and goes back to normal. And normal is not lightning quick, but not too bad. What’s your “normal”? Is it always slow?

Also, are there any screens that standout for their slowness? From my experience opening flows with a lot of nodes is slow, and sometimes opening/editing templates. Curious if there are any particular pages you experience problems with?

 

All the best,

Kevin.

Contributor I
Oct 29, 2026 9:35 PM UTC

I came here looking for an answer because Klaviyo has gotten incredibly slow and nothing has changed on my end! 

KeviSunshine
Expert Problem Solver III
Expert Problem Solver III
Oct 30, 2026 11:29 AM UTC

I have felt these slowness issues over the past 2 days too!!

  • Wednesday (10/28) - segments, flows, basically everything within the dashboard was taking a long time to load and I’d consistently hit a white screen with a spinner–“This request is taking longer than usual.” (rough time = 8am-12pm ET)
  • Thursday (10/29) - my coworker asked me if I had noticed any Klaviyo issues because the reporting was going “unbearably slow” - and he runs reports just about every day so he’s very familiar with the process. (rough time = 4-6pm ET)
Contributor I
Oct 30, 2026 1:00 PM UTC

It’s been the same for me, trying to edit flows, look at flows, edit templates within flows