Purple,. pink and other bright colored textures during race

Hi all,

Since a few weeks textures have not been loading well during races both offline and online. Some texture appear in bright colored squares with most of them purple and pink.

Screenshot Textures 1
Screenshot Textures 2

Recently I set up a new computer and monitor. These are the specs:
OS - Windows 10 b1809
CPU - Intel i7-9700K (not overclocked yet)
Motherboard - Asus Rog Strix Z390-F Gaming
Graphics card - Asus Rog Strix Geforce RTX2080 8GB
SSD - Samsung 970EVO Plus M.2 250GB
RAM - Corsair Vengeance LPX 16GBx2 DDR4
PSU - Thermaltake Toughpower Grand 850W

I tried to manually change the graphics settings from dynamic to high. I also tried turning MSAA off, but this did not solve the problem.
Does anyone know about this texture problem (maybe from other games) and know what is causing it?
I appreciate any help and look forward to more Forza.
Thanks for reading.

Edit 1:
Just tried to do the Le Mans 250 endurance race. It progressively became worse.
5 min: A few textures changing color
10 min: Some parts of the track and in the background change color
20 min: At the same parts of the track the FPS drops from 60 to 10~20
30 min: Frame drops are making the game unplayable. Textures around every corner have changed.
After this I decided to stop the race as I kept crashing into walls because of the frame drops.

I assume you’re only having the issue in FM7?

I’d recommend updating the GPU drivers and if that doesn’t work, reinstall the game.

Yes, the issue is with FM7 only.
Forza Horizon 3 and 4 both work fine.

Yesterday I updated the GPU drivers and reinstalled the game. So far no weird textures or frame drops during races.
I assume reinstalling the game made it change its settings to my new system.

Thanks for the help. If a problem similar to this one pops up I’ll post again, but if not, feel free to mark it as solved.

yep had this issue since the game was launched over multiple pcs

The issue is still there apparently. I’m on Series X though.