devkhaled

hello again 
sorry for the late 
i bought a amazon basics cable 
mini Dp to Dp
and the lag is almost disappear about 95 %
unless if i play a high quality movie in Netflix   
i think the cable solve the problem

thanks 
 

ok , i tried now to low the  HDMI to 1.4 from 2.0 of my monitor setting and the lag still happen 
i wonder about the lag , because  i used to install Big Sur on  dell latitude e6540 and there are no lag 
is the HDMI in latitude was higher than the 7510 ? 

and if i use display port , is it will look like the HDMI  in resolutions ?

sorry for late 
i go to your guide 
download the EFI , copy the file to my EFI and change the values of grub.cfg
then i add new boot option : DVMT and point to /EFI/Boot/DVMT/bootx64.efi

when i boot and choase DVMT , give a black screen and 3 options 
about F1 
F2 
F12

how i can raise the DVMT-Pre-alloc value ? 

thanks 

here you are 

Khaled.ioreg

hi everyone 
i'm have install Big Sur on dell precision 7510 i7 6820 HQ with intel hd 530
everything work fine except the monitor 
i have 32 Samsung 4k monitor link by HDMI in my dell 
the problem : 
there are lag in monitor 
I don't know what is causing the lag ?
i can't fix it , any help ? 

thanks