VERY IMPORTANT:
This is related who don't have problem with electricity and Internet and who is NVIDIA user !!!
My name is Dan and I am living in Romania and I like to play CS:GO and other shooter games, but especially CSGO I am playing a lot.
I have accumulate more than 10k hours on both accounts on Steam.
I didn't had problem with my old devices: laptop (MSI i7 8750h + GTX 1050Ti) and PC (i5 6600k and GTX 660 +144hz monitor 24")
Two years ago in 2021 Feb I just bought my current PC which is 5600x + RTX 3070 + 1440p 27" monitor
Since when I changed my old pc I had input lag after just two bullets when I was shooting in CS:GO and I knew there is something is wrong with this because well I am not very good player I am only Supreme and level 9 on FACEIT, but still I knew that is wrong I have to do this about that.
My mouse was way so off of(heavy, sluggish or whatever do you want to call it.(unplayable I can say) I didn't knew how to fix the problem and then I have tried to fix with many various of tweaks like:
BIOS tweaks
Scripts optimization
RAM optimization
HPET Mode
DDU Uninstall
MSIMODE
NVIDIA all of combination possible
DWM ON OFF
The only fix for me was to leave on NVIDIA to leave Low Latency Mode ON, but still the issue was there also with the input lag
FIX!!!!
Somehow yesterday I have search again about this and found this:
"If you have and NVIDIA GPU, use FULLSCREEN Scaling mode, do a cold boot, try refreshing(meaning select something else like the Aspect ratio scaling mode and go back to the full screen one)
This you have to do EVERY BOOT, you will notice the input lag difference even on desktop after this.
This swap bug has been there since Vista, and since Windows 10 is basically a Vista on the core, NVIDIA has the same bugs in store.
Also, make sure you have "Display scaling mode available, instead of GPU. GPU mode adds a lag you can also clearly feel with your mouse."
Windows 10 is a potato, but somehow new graphic cards and new drivers force us to go for it.

I hope it help some people here and I still waiting for your feedback.
