Strange sound when pressing fly

Do you have any add-ons in your Community folder? If yes, please remove and retest before posting.
Yes, but bug also happends when community folder is empty.
Are you using Developer Mode or made changes in it?
Brief description of the issue:
When clicking on fly now there is a strange loud noise which takes 1 a 2 seconds. Happends also when going back to menu, not every time. Most of the time CTD.
Provide Screenshot(s)/video(s) of the issue encountered:
Detail steps to reproduce the issue encountered:

PC specs for those who want to assist (if not entered in your profile)
msi x399 gaming pro cabon, 64 gb ram stock speed, AMD ryzen 2950x stock, gigabyte 2080ti gaming oc stock, mutiple SSD’s /

Build Version # when you first started experiencing this issue:
After SU 5.
Are you on the Steam or Microsoft Store version?

Did you submit this to Zendesk? If so, what is your ticket #?

I and a friend have also a very loud noice (almost 1 second long) when starting a flight…