I am using modded rock and landscape textures. I'm using STEP 2.10.0 baseline with Requiem 1.9.4.1 on top and a few mods removed for compatibility. My PC has been able to handle STEP 2.2.9.2 without issues, but now that I think of it, the problem could be entirely ENBoost/ini/hardware related since I also changed those when following the 2.10.0 guide. If you're curious, my mod list and inis are in the Google Drive link. So far I've disabled the game's AA and AF and I haven't seen the issue with a couple hours of gameplay. If I do see it again, I'm going to try installing the latest ENBoost binary and re-combing through all of my ini settings. I'm also going to try changing my hardware anisotropic filtering to "use applicatiion settings" if that doesn't work. I'll post how everything turns out. Thank you for some fresh ideas!