Hello, my a320 tries to follow the flight plan but ends up overshooting left and right and wont zig zags on a straight path. Anyone with solutions to this?

Hi @Superdraco2

Please ensure you don't have any assists enabled (Options > Assistance Options > Piloting).
Even if you didn't have them enabled before, do cross-check as MSFS has a tendency to re-enable them sometimes whenever it updates.

Other users who reported such issues were able to resolve it after disabling the AI assists.

Thanks!

Hello @VrishabhSehgal, all AI assist have been disabled but the problem persists. 

Hmm. @Superdraco2
Can you please confirm what was your FPS at the time you noticed this LNAV tracking issue? You can check your FPS in the sim by enabling Developer Mode. Then from the Devmode Toolbar on top, select Debug > Display FPS.

Please share a screenshot of the FPS window during the time you have this issue.
Thanks!