Periodic Stutter when using Navigraph Navdata

[RexColt]

When using Navigraph Navdata i get a cyclic lag pretty much exactly every 2.5 seconds as seen in the MainThread graph. This is very noticable and makes flying the plane unenjoyable.

Tried reinstalling just the plane. Tried reinstalling and deleting WASM folder and state.CFG. Even tried reinstalling the entire sim. Also tried some BIOS settings: Virtualisation, Multithreading, TPM, Secure Boot etc. Tried older GFX and chipset drivers and the "Fix problems using Windows Update" feature which essentially reinstalls Windows while keeping all the programs. Still Stuttering.

Only workaround that i found is setting Navdata to "Sim Default". In this case those periodic stutters instantly vanish, but im not sure what else it changes.

Had a similar issue in the 777-200ER and 200F but there the workaround is changing both Pilot and Copilot EFBs to a specific page. Here theres no such workaround. 

Specs: 7800X3D, 32GB DDR5, RTX 4070S, NVME SSD, (no throttling whatsoever and plenty thermal headroom confirmed via HWINFO)

This is in MSFS2024. Did not try it in MSFS2020 yet. 

 

Edited June 4 by RexColt