Hello Am i the only one who observed very bad performance since updating to today’s update on windows 10 ? I can’t seem to work in correct conditions due to strong IDE lags, i’m thinking of temporarily switching to sublime the time it’s solved (yes it’s that bad). I wonder if i’m the only one havi…

Cursor is basically unusable on Windows atm @Colin , @deanrie could we have someone look into this please? How was this shipped to prod?

+1 everything lagging hella hard on windows

Wow you file 9719 lines is way too big! Get AI to refactor that into sub classes!

cursor is unuseable right now. this latency in the IDE is absolutely ridiculous.

Fixed now, it was in the Chat window – close all tabs and start new tabs

[image] Bruno23: How was this shipped to prod? Also wondering how they managed to ship that.. :upside_down_face:

Funciona con todos los modelos, incluso si lo pones en auto.

still extremely laggy for me once a chat window gets decently populated

Hello everyone! This is David Gomes, from Cursor. We believe the issue should be fixed after you restart Cursor. We have disabled a feature flag that caused diff rendering to not work properly on Windows or files that use CR+LF (most common on Windows). As for performance implications, we are still…

Laggy agent chat

Support Bug Reports

Topic		Replies	Views
Cursor is not usable after the last update Bug Reports installation , performance , crashes	53	2470	March 16, 2026
Cursor v1.3 - Pre-release Discussions Release Discussions	149	8398	July 31, 2025
[Cursor 2.5/2.6] Taking longer than expected Bug Reports chat , performance	85	17729	April 7, 2026
Only some diffs are shown whhen agent makes changes Bug Reports review , early-access	238	6042	March 16, 2026
Cursor becoming unresponsive with longer chats Bug Reports	54	1173	September 2, 2025

Laggy agent chat

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