In my opinion some gameplay mechanics, some visual effects, some story elements and the world design does not work well together.
It looks like different developpers did not harmonize their job to create something coherent.
It does not prevent to have funny/silly characters like some were in BG1/2 or a few obvious references to the fact it's video games... But in the old games the mechanics, the world design, the story and the visual effects worked well together.
In BG3 combats look like a silly parenthesis in the adventure (way less than before). The map design create wierd situation in the story or the coherence of the world. Many visual effects or animations are shouting "video game" way more than necessary...
It's probably gonna be one of my biggest dissapointment in the end. I'll deal with it because the game has many good things to offer but I really hate this.
In my opinion the best games of all time have to be coherent. BG3 is not at all.