opencode extremely slow for versions after 1.2.25 #27310

Description

I updated opencode recently, it's excruciatingly slow since.

I'm using mise so I'm trying various versions to compare the speeds and I'm noticing that opencode is much slower with more recent versions.

My benchmark is asking MiniMax M2.5 "give me an overview of the project" with github.com/maid/maid on the master branch.

With versions 1.2.26 and later, it takes well over a minute (between 1min30 to over 2 minutes) to get the answer. With versions 1.2.0 to 1.2.25, it takes 35 to 50 seconds most of the time.

With v1.14.48 it's become so slow that opencode is unusable. Any task involving actual building takes 10, 20, 30 minutes easily.

Plugins

none beyond the default config

OpenCode version

v1.14.48

Steps to reproduce

1. git clone git@github.com:maid/maid.git
2. mise use opencode@1.12.25
3. cd maid
4. opencode
5. Plan mode > "give me an overview of the project"
6. Takes 30--50 seconds
7. mise use opencode@1.2.26
8. opencode
9. Plan mode > "give me an overview of the project"
10. Takes at least 1min30s
11. mise use opencode@1.14.48
12. opencode
13. Plan mode > "give me an overview of the project"
14. Takes at least 1min30s
15. This seems to be the case with any version > 1.2.25

Screenshot and/or share link

No response

Operating System

Mint 22.3

Terminal

gnome-terminal