Roextended Project

I see many people who have an AMD freesync or G sync monitor have brightness Flickering problem. It's because the freesync or G sync range is at the max refresh rate.
Example on this image:


Refresh rate range is at the maximum refresh rate 144hz but the problem when playing the game is the screen has brightness flickering and make the game unplayable even on freesync monitor certified compatible g sync.
but don't worry here's a fix.

Step 1 download CRU (Custom Resolution Utility): https://www.monitortests.com/forum/Thre ... tility-CRU
Step 2 download 7-zip or Winrar if you don't have installed on your computer
Step 3 after unzipping the file: open CRU and click on the range limit
Step 4 disable g sync before change the frequency of your computer
Step 5 Click on edit and the change 144hz to 143hz.
Step 6 create a custom resolution in the Nvidia or AMD control panel at 143 Hz
Step 7 Restart your computer and enjoy a flickering free monitor.

Note this problem happens more often on AMD freesync monitor than G sync monitor.
A lot of people included me says they can't use freesync because of this problem, I started to think it's was because of G sync but it's not the G sync cause.
It's will be more coherent because of ETS2 Show 143hz at the maximum refresh rate.

My results: for me, it's work very well the result that's could be different for some users.

FAQ
My AMD Freesync disables automatically.
Normally it shouldn't or maybe there's a problem somewhere?

I put 143 Hz but the screen continues to brightness flickering.
decrease the freesync max range. I put 60-23 Hz as range and brightness flickering stop happening.

Have nice trucking.

@Ticreut29

Good and I helped you to edit the subject title to be proper!

I finally fix the brightness flickering problem for me, I put 60 Hz to 23 Hz like wombat do with his monitor and no problem in-game.

@Ticreut29

The same goes here, you talk rubbish and this is a warning!

// ok so it worked at first, but after I finished gaming and shut down the PC the flickering started again.
So here is what I did in order (my AOC AG241QX range is between 30-144hz):
-starts the PC
-open Nvidia Control Panel
-Disable G-SYNC
-open CRU and sets range limit to 143 and refresh rate to 143.999
-close CRU and open Nvidia Control Panel again
-change resolution and make a custom one for 143Hz
!!!IMPORTANT!!!
-before activating G-SYNC again untick/disable the 3rd option where it says "Enable settings for the selected display model"
I found out this was the problem for me and every time the PC restarted this option enabled made my screen to flicker in games. I tested it with multiple restarts and shutdowns and it works. No more flicker!