Why is this game so bad?

played for 140 hours on EA release then dropped after maxing 1 character and finishing main quest because of the bad performance and too little xp given on new characters.

Came back recently to gev it another shot after Echoes update and i find the game with the same performance issues: constant stuttering, frequent crashes, multiple lighting bug/glitches.

i thought that after like 10 months at least these issues whould have been solved.

i can't even play the game for like 30/40 mins without a crash or a total screen freeze requiring pc reboot.

performance wise looks like a school project and not the work of a studio behind Darksiders genesis and Ruined king.