Hey, apart from common gfx-glitch-sources (green mountain/cherno/balota airstrip/nw-airfield/military tents) I experienced glitches that were produced clearly by zombie-hoppers/walkers in v1.7.2.4. Those zombies somehow had 'broken' 3d models - I'm talking about their arms here. Meaning the bone was kind of reaching/extending out of the arm itself. As if the movement-rig doesn't fit the model correctly. However, those zombies were the cause for heavy gfx glitching in Cherno for about two or three times. Unfortunately I don't have any screenshots of it which is why I thought I might just write it down here. Hope that helps. Cheers and keep up the good work!