Well i have 1.4 SweetFX version with only x64 files to run sweetFX with x64 bit application is there any version of 1.5.x or 2.0 with x64 support?

Try ReShade it has support for almost everything. Reshade.me

you know i have no gren idea how to use this reshade earlier i try to run one of the preset with reshade for withcher but the game wont run and i do all which is written with instruction so only 1.4 have x64 bit support now?