I dropped cursor for the precise reason you mention: reliability.
Countless times my requests in the AI chat just hang there for 30+ seconds more until I can retry them.
When I decided to give Claude Code a try (I thought I didn't need it because I used Claude in Cursor) I couldn't believe how faster it was, and literally 100% reliable.
EDIT: given today's release, decided to give it a go. The Composer1 model _is_ fast, but right at the second new agent I started I got this:
> Connection failed. If the problem persists, please check your internet connection or VPN
Sounds like you have a network problem. Did you try checking the network diagnostic in settings? They default to http2 which can throw a wrench in some corporate networks.
I would be willing to bet money your issue is on your side. I am a daily user since the beginning and cannot recall when I have had issues like you describe unless it was related to my corp network.
A lot of progress is being made here on the Cursor side I encourage you to try it again.
(Cursor dev)
This is the exact reason I left Cursor for Claude Code. Night and day difference in reliability. The Windows experience might be especially bad, but it would get constantly hung or otherwise fail when trying to run commands. I also had to babysit Cursor and tell it to continue for mid sized tasks.
They've improved performance dramatically in the last few weeks, might have fixed your issues.
Its clear they've been shipping a lot of windows updates.
It does seem significantly better on Windows. I'll give it another chance over the next couple weeks.
I use cursor daily, my business partner uses CC. Without a doubt, CC is certainly better, I'm just not willing to let go of the flow I spent the last year fine tuning. I'll probably make the leap after we finish the latest release.