It’s not really a fair comparison because Solasta built their game engine to run 5th edition d&d. Larian built their game engine to run DOS2 and they are now just hacking in (some) d&d rules and things
Solasta had a fraction of budget and staff that BG3 has and by Larian’s account the engine have been heavily modified for BG3. BG3 perhaps couldn’t use same solution that Solasta did (like cube map design) but frankly any limitation that BG3 engine has is by choice, not by necessity.
