I don't believe in the video card memory problem because the bugs still happened when I used 800x600. I'm just trying to play in 1024x768, so it's not a big difference from 800x600. Also, if I turn off HiAlgo Boost in-game, all the bugs are fixed instantly. I'll try these options to see if any works, thank you for answering.
> some textures won't load, and the skills menu won't even appear to me
Well, there were such complaints a long time ago, I am trying to recall...
One option is that your video card does not have enough memory. If so, you can decrease the resolution - but this is exactly opposite to what you want! Not good.
You may try removing some features, like shadows, antialiasing...
If this did not happen before and then started, removing HiAlgoBoost cache or even reinstalling it may help.
Another approach: try new HiAlgo BOOST (universal) instead the legacy BOOST you are using. Get it from our website.