Why does Positron lag after code execution when large Python objects are in the environment?

[leonleom]

Hello Positron team and community,

I've encountered a performance question while using Positron for my Python work, especially with large datasets like fMRI data.

Here's the situation: After I load a large object (e.g., a multi-gigabyte NumPy array) into memory, every subsequent code execution becomes very slow to complete. For instance, even running a simple print("test") statement will cause the IDE to hang for 10-30 seconds. The output appears instantly in the console, but the UI freezes and I can't run the next command until it unfreezes.

[juliasilge]

I think this may be related to either #8245 and/or #2537. Can you take a look at see if either one describes what you are experiencing?

If not, can you share more detail about the code you are running that gets you into this state? For example, can you share a reproducible example?