4Game

Nvidia dropped their bomb with DLDSR already at the driver level, which means it works with pretty much every game. Driver version 511.23.
What's special about this, and for Tarkov is that this game is heavily CPU bound for most users. No matter what GPU you put in, it hardly makes any difference. You have all heard it before.
This driver isn't working properly, but good enough to test things, even though they are "Game Ready". Whether you decide to use Geforce Experience or not is up to you, but i seriously suggesting not to use it for many reasons. Go to Guru3D, they have a forum with a clean version of every driver.

Now, in the Nvidia Control Panel, go to Manade 3D settings and in the first tab called Global Settings, you have DSR factors, just like before, but DLDSR is now added, and you can see something called DL Scaling. Enable both new resolutions. Set smoothness factor to about 40%. 30% is way to sharp for me. Make sure you have added a profile for Tarkov to in the next tab called Program Settings.

Back into the game now, you will have two new resolutions. Don't be scared, they are crazy high and will tax your gpu to the max and your fps will be dogshit. Here is the ticker that somehow works amazing for my system. Tarkov have downsampling. Set it to .5. Yes, that's half of what you just chose above. Run a online raid and see. Make sure to set everything to off in the settings but use the boost thingy. The added resolution and downsampling somehow makes things look amazing. And best of all, i pretty much have the same FPS. I lost like 10 fps. It feels like i am playing Woods in 4K at 130 fps, 110 while scoped off course. Labs is 230 fps (lol), Shoreline 130, Reserve 120, Customs 120. And best of all, the bottleneck is now at or at least very close to be the Gpu. Much less stress on the cpu, while keeping the game at descent fps with good looks.

Whats wrong with these drivers and this game (haven't tested in other games) is that once you leave your hideout and into the raid, the resolution is soft reset in the settings. All you have to do is to use the drop down to your original resolution and back to the new resolution, hit save and resume.

Note that Post FX will tax your system a whole lot now that you suddenly are GPU bound. I suggest you use the Nvidia Control Panel color settings to about 60-70% instead of Post FX. And maybe increase the gamma settings for those dark spots in Intercourse.

System:
9900K
32GB 3600 Ram
2080Ti
2650×1440 screen

All three have a descent overclock, nothing super major.