Stutter after first quater

[nivekbs]

Hi guys, you are my last hope in terms of playing nba2k15. All the years i play the game on pc alway the League Mode or Asso-Mode earlier.

This year its impossible for me - after playing some games the game randomly begins to stutter very hard. I cant fix that, the only thing i can do is to start again new Career and hope. But i am tired of doing that. So far i started 5 new careers

Google did not help me, so if anyone have a helpful idea - this would be great.
Gameversion is pc/steam, PC: Win 7 64bit, MSI GTX 970, Intel I7 2600k, 8GB ram. Other stuff running well