Windows issue on OpenClaw 2026.4.27 (cbc2ba0):
OpenClaw worked fine about a month ago. Then I left it without a model provider for a few weeks. After coming back, the whole local setup became extremely slow/unresponsive. I’ve reinstalled multiple times with no real improvement.
Main symptoms:
- iwr -useb https://openclaw.ai/install.ps1 | iex appears to hang on Starting setup...
- openclaw onboard takes a very long time
- openclaw doctor is very slow
- openclaw tui is very slow/unresponsive, or gets stuck at:
connecting | idle
agent main | session main | unknown | tokens ? - the local control UI at http://127.0.0.1:18789/chat?session=main is also very slow, and the agent often never replies
- most of the control UI is slow to load
What I observed while debugging:
- Even with nonessential plugins disabled, the gateway still stalls badly.
- Gateway starts and reaches ready, but later blocks its own event loop hard enough to miss local WebSocket handshakes.
Representative gateway log symptoms:
- startup model warmup timed out after 5000ms; continuing without waiting
- handshake timeout ... remote=127.0.0.1
- large liveness warnings like:
-- eventLoopDelayMaxMs=23018.3
-- eventLoopDelayMaxMs=76638.3
-- eventLoopDelayMaxMs=188039
-- eventLoopUtilization=1 - control UI requests taking minutes:
-- models.list took 278579ms
-- chat.history took 278586ms
-- sessions.list took 278604ms
Other notes:
- openclaw models list from CLI can still complete in about 12s, so Node/npm are not totally broken.
- The problem seems to be inside the running gateway/control-plane path rather than simple install failure.
- I also tried disabling bundled plugins and forcing the model to transport: "sse" with openaiWsWarmup: false, but the control - UI/gateway still becomes glacial.
Environment:
- Windows
- local gateway on 127.0.0.1:18789
- model configured: openai-codex/gpt-5.5