Cursor consuming massive amounts of memory and compute

First of all I love this product!

However, I am having one big issue if I use the product for an hour or more my system gets overloaded and slow. I have a very powerful machine with 64gb of RAM. not sure why this is happening but I end up crashing and rebooting my system every hour.

1 Like

Hey @fbit

Open the running processes and check there, you might find the information you need.

I have the same issue, 64 GB of RAM is drained within an hour, leading to freezes. Started a week ago or so
Next js projects with hot reload
Windows 11

Lol. As soon as I opened this, the lag stopped.

image

1 Like

Working with Cursor for hours each day and it eats 1-2 gigs max with no issues at all even with big projects (2000+ source files). I`m on Windows and 0.42.2.

I’m on a mac.
image

It seems that if you have a very long conversation with the chat, the renderer is just pegged. it gets worse and worse as you interact with it.

I would think rendering very old parts of the conversation would be unneeded. Should only load the history into memory for up to a certain distance in the past. Then load as you scroll back if needed.

Or rendering the documents you’ve submitted especially when having it read your project directory. Once the docs have been read and sent to AI, they should be unloaded from memory.

In just typing this, it spiked up again. :exploding_head:

15GB - Renderer, 11GB - Plugin

This needs to be priority number 1. Cursor froze my entire pc. I opened up task manager and it was using 10 gigs worth of memory.

That is asinine. You have to fix this

Same issue for me.

I will add this is a nightmare when working with a low power EC2 instance like a TC3.micro.

20 minutes of use and Cursor Server will crash it - it keeps spawning lots of Node processes and eating up memory until the server freezes and needs a reboot.

Quitting Cursor and reloading it does help but it obviously breaks flow quite a lot.

I’m experiencing significant performance issues since I started using Cursor AI on my laptop with 32GB of RAM. The machine frequently hangs, drains memory rapidly, and becomes unresponsive and sluggish. :weary:

They said “agentic computing raises the bar!”

BOJBPOW

This is BEYOND Frustrating

Cursor team stop processing new updates and features until you fix this broken mess.

Priority #1 for this entire team should be to fix these memory leaks. There should be nothing else on the table right now other than this. This is unacceptable and makes me wonder who is running this show.

You guys need a good program manager who knows how to address items and prioritize items

Hey, excessive memory usage might be due to extensions, as I don’t experience this issue. To rule it out, you can start in safe mode by entering this command in your terminal: cursor --disable-extensions, and see if Cursor behaves the same way.

Lol my prod server just had oom kills… I was looking at my code as culprit because even though the machine has 128gb ram, it wouldn’t be impossible for me to kill it…

turns out, cursor had somehow eat >60gb of ram and >90gb of swap… needless to say, the ide was somehow the problem…

Sure, I’ll just prioritize so that cursor is the first thing to get killed, but that is pretty crazy lol. likely will swap to zed.

cursor

1 Like

I am consistently experiencing the need to restart Cursor because the RAM usage is reaching up to 15 GB, prompting the force quit window to appear.

1 Like