In enbseries.ini find these and set to 0 all variables:

Then copy d3d9.dll from any version of GTASA mod to game folder and start the SAMP. If it is buggy, then download another version of the mod and again copy d3d9.dll from it to game folder and start SAMP. If you will find one version which work (but without effects), then restore enbseries.ini file or manually set to 1 those effects which you want (game restart may required, don't remember).
Quality of depth of field is
[DEPTHOFFIELD]
DOFQuality=2
- set it to 0 if you want highest quality, 1 - middle, 2 - noisy.
Anyway, there are many presets with shaders programmed by users, which work "out from the box".

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i5-4690k, 16Gb RAM, GTX 1060 6Gb, X-Fi Titanium, Win7 x128
I am INFP, not the brutal, godamnit.