BG3's combat is terrible. D&D 5e is bad enough on tabletop, but in a video game it just does not work at all. D&D needs an incredibly skilled GM to paper over all the glaring problems (and any GM good enough to run D&D well probably knows enough to run something else instead), and just conflicts horrible with the rigid precision of a GM-less video game, nor does its dungeon-crawling resource attrition paradigm work with a fixed narrative world.