How to reduce artifacts on cars back without disabling XeSS?

So, I started playing the game on Intel ARC integrated chip (meteor lake ultra 5 processor) and it natively supports XeSS 2.0 upscaling and frame gen. But There is this annoying visual artifact coming up when driving in changing light conditions where black shimmering dots appear on my car's back. This is clearly related to the XeSS upscaling. Do you think it might be worth to use Optiscaler and inject DLSS to get XeFG? Or are there any other graphical settings/mods which can improve this using native XeSS 2.0?