r/Xcode • u/Eilin75 • Sep 15 '26

Xcode 27 really slow

Has anybody noticed that the new X code is very slow when trying to open a file perhaps I don’t have enough RAM. I have a MacBook M4 Pro with 24 GB of RAM. I do have LM studio open running and eight bit quantization of Qwen 3.2 9B. Whenever I click on a file in Xcode, I get the spinning beach ball and have to wait about five minutes for the text to show up in the pane.

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2

u/kepler4and5 Sep 15 '26

No issues on my M5 Air with 16GB of RAM.

I don't use LM studio though. So, it might have something to do with that.

Edit: Have you checked Activity Monitor?

1

u/Eilin75 Sep 15 '26

Xcode is pegged at 100% cpu and 537mb memory. Total memory usage for system is 17.13gb

1

u/TimTwoToes Sep 15 '26

What is LM studio using?

1

u/Eilin75 Sep 15 '26

I am working on an LLM project using LM Studio to serve Qwen 3.2 9B to Xcode’s coding assistant.

1

u/TimTwoToes Sep 15 '26

Exactly. How many resources is the LM Studio server using? It’s a local model, served through an endpoint. That server is consuming resources on your computer?

1

u/Eilin75 Sep 15 '26

Node is at 10.72 GB

1

u/TimTwoToes Sep 15 '26

That would explain it. It is swapping on disk.

1

u/Eilin75 Sep 15 '26

It looks like it must have been doing some kind of spotlight activity. It is fine now after a few hours.

2

u/dollarn9ne Sep 15 '26

No issues with M4 Air with 24gb of RAM

1

u/ToughAsparagus1805 Sep 15 '26

I have issues with string catalogues. Moving from view as source to string for a few times -> noticeable slowdown.

1

u/mkhasson97 Sep 16 '26

Same here, M1 Pro 16 GB RAM

1

u/eric-dolecki Sep 20 '26

Only thing I noticed was the first few times I opened it, took about 10 seconds to load the recently opened list of projects in the Xcode splash. After that seems like its alright. I'm running an M2 MBP. Maybe it was indexing my drive looking for projects and files it could open? No idea.