Rider Debugger is super slow to start!
I experience this slow performance everyday.
- Developing Avalonia application (I guess it's the same with other types of apps)
- Every time start Debug, this is show for several seconds.
In Visual Studio this doesn't happen. It runs almost immediately. I wonder if there's some bottleneck with the debugger. Or if VS is playing tricks so “third party” IDEs have a slower debugger.
Thanks.

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Rider has its own debugger implementation, we have released several changes in the latest 2025.3.2 regarding the debugger performance. Hope it helps with your issue.
You can try to collect IDE logs to see if there is any useful information in Help | Collect Logs and Diagnostic Data. Clean IDE caches (File | Invalidate Caches) will provide a clearer view in the logs.
If you still can't locate the performance bottleneck, please file a new support request (Help | Contact Support) or create a new issue on YouTrack. Our support team will assist further.