Take a look on your hardware setting config file in My Documents/My Games/F1 2023.
Under Post processing:
<postprocess motionBlur="False" godRays="true" depthOfField="True" lensStreak="true" lensFlare="true" bloom="true" motionBlurV2="False" />
You will see there are 2 settings for motion blur. Set both of them to false.
I would even try Depth of field to “false” also, if it doesn’t help.
Or just turn Post processing to Low in the game menu. It should get rid of the horrible blur in the distance.
You can keep DLSS enabled with the above method.