MXAO in 3.0.8 and 3.4.0

So im testing MXAO on Stalker Anomaly mod, and older version like 3.0.8 works properly ie. no lagging of the picture when you move camera, the AO is not displaced, no apparent movement of the foliage scenery. With 3.4.0 AO is moving giving this weird lagging effect -object already moved in camera, but AO looks like its lagging, creating the sense of motion, like the shrubbery could move for example. In 3.4.0 i only have option "copy depth buffer before clearing" in dx10 tab, since without it there's no depth buffer to access strangely, and MXAO dont work at all at default settings. FPS also seems to be more affected by MXAO in 3.4.0 than in 3.0.8, despite the same preset quality[16 samples] and subjective image quality.