Sorry, I didn’t notice your post somehow or I would have responded earlier.
This is a quite common thing.
There are several first steps to take.
With the sim running, if you are on the start up screen, from the top heading, select “Options”, or if you are already in the sim, press “ESC” on the keyboard.
- Under “General”
Set “Flight Model” to “Modern”, not “Legacy”. - Under “Assists”
Set all “Piloting” assists to “Off”
When you are in the sim, from the “winged” sim icon, ensure in AI Control (icon to the right of the yoke icon) that “Control Aircraft” is “Off” (button placed to the left).
Next, and quite important, is to add deadzones to each axis for all your controllers. Approximately 5% should be enough, but there have been instances where significantly more was needed.
Make sure you keep us up to date on your progress with the issue.
If you are still experiencing this after doing the above , there are still a few other steps to try!