Look for the Tablet section, just below the performance settings...
Video Transcript
Hello everyone! If you notice some delay or lag in your strokes when using Krita with a graphics tablet, and you've already tried other solutions like updating your drivers, using a lower ppi resolution, or adjusting Krita's performance settings, there's still another step you can try.
Open Krita's configuration panel from the Settings menu. Look for the Tablet section, just below the performance settings. Here, change the Tablet Input setting from Win Tab to Windows Ink. This change will take effect after restarting the program, so give it a try after closing and reopening Krita.

This tweak solves the problem in many cases. If you know of any other solutions to the tablet lag issue, leave them in the comments so they can help other users too! See you next time!