If like me you have a dogshit CPU and updated your GPU to get more out of Tarkov read this.
If this doesn't apply to you move on.
First of all you will need at least 32gb of RAM to play Streets or Tarkov with high textures, DDR 4 2 x 16gb sticks (recent got second hand) is what I use - my motherboard and CPU are 7 years old. I have a 2700x CPU and ROG STRIX B450-F GAMING motherboard. I have a QVO SSD.
These settings are for 1.0. - Your results may vary but the performance difference is amazing.
My GPU is RADEON 9060 XT 16gb
Settings:
PUT YOUR TEXTURES ON HIGH (THIS USES YOUR GPU NOT CPU)
USE STREETS LOW TEXTURE MODE AND TEST IT.
PUT SHADOW QUALITY ON HIGH (OFF LOADS FROM CPU to GPU)
ENABLE "USE PHYSICAL CORES ONLY"
PLAY IN BORDERLESS MODE (TEST FULLSCREEN, THIS WORKS BEST FOR ME)
AA = TTA
AMD FSR 2.2 / 3.0 OFF (Does nothing but make the game look like shit)
EVERYTHING ELSE LOW or OFF
LOD = 2
OVERAL VISABILITY = 1000
DISABLE GAME FPS LIMIT = ON
POST FX = OFF - USE AMD CONTRAST BOOST or NVIDIA COLOUR SETTINGS
AREA LIGHT ASSISTANCE: ON - THIS WAS THE SETTING THE CHANGED EVERYTHING
This increased my FPS at 2560 x 1440 from sub 40 to 70-90fps on streets. All other maps are 100+ FPS. No stutters, no lag, no feeling like you are playing under water. I can finally use scopes.
If this helps one person make the game playable like it did for me, my work is done.