[HELP] Intel Graphics Fixup UHD 620 7 Mo Fix

Hi, I managed to run macOS Catalina on my Dell Inspiron 15 3583 (Core i3 UHD 620) but the video memory is blocked on 7mo.

I tried several techniques but nothing worked.

Only in HDMI I have my 2048mo but the screen doesn't work (black screen on the integrated display).

Do you have any ideas?

I use Intel Graphics Fixup for use the integrated screen

Thank you