In fact, one thing Solasta does better than BG3 IS combat. Frankly, Solasta blows BG3 combat out of the water. It's more strategic, balanced, easier to learn, actions are easier to find and understand...
So funny, I really find the combat in Solasta to be a slog. I don't like the UI at all - I feel like I'm constantly looking through the menus trying to remember what is a spell, what is a bonus action, what is a "power." And I don't find the battles to be all that strategic. Say what you want about high ground bonus in BG3, it does add some interest/strategy with trying to best position characters. I also happen to like the environmental factors like exploding barrels and surfaces (when used sparingly) because they tend to throw in an unexpected element to the fight. Though my view of Solasta might be slightly skewed because it runs so poorly on Mac unless I turn the graphics down so low it looks like garbage.