Problems with turbopack in dev development being way too slow, taking 25 seconds for page to fully compile

[gustavotrapp]

Summary

I'm currently building a very complex page, which is essentially a dynamic dashboard builder, sort of like Grafana or Metabase. The page loads are taking forever, and with this page in specific, it takes a long time. But every single other page that we have in our application also takes a ridiculous amount of time. It takes anywhere from 15 seconds to, in this case, 25 seconds. When my machine is very slow, it can take up to a minute really, but in this case, it took 25 seconds, and the experience is complete trash. The dev server keeps restarting, and I'm just looking for a way of getting better performance. How can I optimize this? Is this really just a limitation? What can I do?

Yes I'm using Turbopack
Yes I've read https://nextjs.org/docs/app/guides/local-development
No I can't really share much code, but the compiled build of the page is approximately ~2.5MBs
Other pages are around ~500kBs

Video showing the turbopack-trace: https://www.loom.com/share/4e0aa5c58ea14bd8a03d892c5a85319e

Project setup

Our setup is essentially a monorepo with Turborepo and we have a apps/ folder which has just our Next.js application with another service that we have that's an internal service. Then in our packages we have our tRPC package, a db package and a few other utility packages. Essentially, what we do is we always compile our packages so that our typescript performance isn't bad when we use it in our Next.js app. Then we essentially just import it all as a private internal module.

Weird bugs

Additionally, I think it's important to mention that sometimes I have to restart my MacBook after developing for a long time because the HMR in hotreload just doesn't work anymore. I mean, I get a HMR error in the terminal saying that something failed, but I have no idea what, and it just doesn't work. The refresh doesn't work. I make a change, it doesn't reflect. It's extremely weird.

Additional information

Operating System:
Platform: darwin
Arch: arm64
Version: Darwin Kernel Version 25.0.0: Wed Sep 17 21:41:39 PDT 2025; root:xnu-12377.1.9~141/RELEASE_ARM64_T8103
Available memory (MB): 8192
Available CPU cores: 8
Binaries:
Node: 20.19.5
npm: 10.9.2
Yarn: 1.22.22
pnpm: 10.7.1
Relevant Packages:
next: 16.0.1
eslint-config-next: N/A
react: 19.2.0
react-dom: 19.2.0
typescript: N/A
Next.js Config:
output: standalone

Example

I can't provide this because it's internal code from our organization.