Performance degrade over time.

After couple of hours Cpu graph doesn't go below 15ms, fps drops badly and processor load even in menu is very high.

Ryzen 5 3600 stock, 1660ti, 16gb 3600mhz ddr4, nvme ssd.

Lowest settings, 1920x1080, triple buffering off, multithreading on, dx12 (but problem is present on any of the three), steam client.

Only solution right now is to restart the game every hour before it becomes really noticeable.

UPD: Staying in heist now and situation is much better. Probably not that many things loads and stay in the memory compared to mapping.