One of the easiest ways is to install the game on SSD (Solid-State Drive)
1. Create a folder for the game library on the SSD. Go to settings, select the "Downloads" section and find "Library folders" there. Specify the drive letter that is assigned to the SSD and create a folder (by default, you should have - SteamLibrary).

2. Now, if the game is already installed, move the game files to a new folder. In the folder that we created, make a folder "SteamApps", inside another one - "common". You need to move the game files to it.

3. Close, save and check the integrity of the cache
Library -> Properties -> Installed files -> Check the integrity of the game files

Here I recommend you select the section: full screen (this is necessary so that you have other detailed settings windows open, and from experience, the full screen works smoother and more comfortably)
Select 60 hertz. You still won't notice the difference in quality and smoothness between 60 or 144, unless you have a super expensive monitor and the game is not on ultra settings, but this will reduce the load on your video card.

Turn it off, it's a useful function, but now small cosmetic things are less important to us than the smoothness of the game. (Without this function, sometimes transparent stripes can appear during the game, sharply floating across the screen, not particularly noticeable to the eye and not disturbing)
We set it to 60, because if we set it higher, the game will try to give more fps, which at low or medium settings + the hertz limit, will jerk the picture. 60 is acceptable, the difference is also not visible, unless your computer is a super machine, bought at the price of a mortgage and assembled by the best programmers and other wizards. If you still have lags on 60, you can try 30, but 60 is really comfortable.
It is important to clarify! The game often removes the fps limit after a restart, it is better to set it from the beginning.

Full settings will depend only on you, I will tell you where it is better to put emphasis and what to watch out for. In other sections, you can set the lowest and increase until it starts to lag. This is how you will find the line.
So!
I recommend on most PCs to ensure that this does not exceed 85%, this will save you both the picture and the quality and your computer, along with cooling and a video card. But if you do not care about your video card, you can use 100% (i do it, but i do not reccomend tho)
if your machine for running video games is not capable of dragging everything on high, then you need to forget this section in all games and turn it off.
turn it off
turn it off too
we don't need it either
do you care? I don't. Low.
turn off
Either none or NBAO
none
low
I recommend setting everything related to the landscape to low, and detail to low or medium, but turning off strands of hair.

It is also better to turn off live wallpapers on your computer from any third-party application, this loads your video memory and CPU. And in general, unload your device and processes as much as possible via control + alt + delete and remove unnecessary tasks.

The comments also recommend
I did not try, but looks helpful tbh
USE IT VERY CAREFULLY
IT IS MORE HELPFUL ONLY FOR PLAYERS WHO DO NOT HAVE ENOUGH RAM


https://www.razer.com/cortex
https://www.wagnardsoft.com/forums/viewtopic.php?t=1256

One more method from comments



https://www.nexusmods.com/dragonagetheveilguard/mods/6
https://www.nexusmods.com/dragonagetheveilguard/mods/1