I had this after a re-install of the game and it wiped out my previosly set Graphic Settings.
I can confirm this is solved by setting Displacement Mapping the SAME in 2D and VR Graphics Settings (either both ON or both OFF).
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Topics have been merged 
. I have also added the workaround tag and pointed the temporal solution to @Baracus250 post. I guess user should be able to set the displacement mapping independently in VR & 2D without generating that graphical issue. This is the fix that needs to be implemented.
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ISSUE DESCRIPTION
Description of the issue:
Texture bug spikes on runways, only in VR. Switching to flat screen does not show them. Nevertheless, they trash the aircraft.
Gothenburg and Lille Airports.
[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?
Yes
FREQUENCY OF ISSUE
How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
Happened on Takeoff in Gothenburg (without totalling the aircraft) and again on landing in Lille (aircraft destroyed).
REPRODUCTION STEPS
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- Spikes appear, aircraft running OK.
2.Go to flatscreen mode. No spikes. - Go back to VR mode. Spike reappear. Aircraft destroyed.
YOUR SETTINGS
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What peripherals are currently plugged in, as well as your VR headset? Please name all of them as there could be a potential conflict.
Crosswind pedals
Thrustmaster warthog HOTAS.
Various switchboxes.
None ever caused a problem previously.
[PC Only] Are you using Developer Mode or have you made any changes to it?
NO
[PC, MSFS 2020 Only] Are you using DX11 or DX12?
[PC Only] What GPU (Graphics Card) do you use?
[PC Only] What other relevant PC specs can you share?
i9 9900k
RTX4080
64gb DDR4 RAM.
Several M2 drives.
MEDIA
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[END OF FIRST USER REPORT]
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Exact the same problem. Switching to VR lets the plane wiggle and sometime crash before starting the aircraft. Big spikes ruin the aircraft.
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There is a workaround. I had these issues but after setting displacement the same as the 2d settings it was solved
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Still present in SU2 1.4.20.0 if the Displacement Mapping settings in flat panel and VR do not match. If having them set the same is the only solution, maybe the settings options can be linked to each other, and both change when the user clicks one of them.