i guess you meet similar issue with this post. here is my solution and i hope it can help you.
related post:
https://zeabur.com/forum/posts/69d50cf6ddd5e9c263d318b7
Environment:
Issue: The system experienced CPU overloading during the initial startup phase, preventing OpenClaw from initializing correctly when other services were running simultaneously.
Solution: I temporarily stopped other resource-intensive applications to prioritize OpenClaw's bootstrapping. Once OpenClaw was fully operational, I manually restarted the remaining services. This sequential startup approach successfully bypassed the CPU spike and resolved the issue. It appears that 4 vCPUs may hit a bottleneck during concurrent service initialization.