How do I fix combat scene stutters in Alan Wake 2 caused by poor airflow in the Jonsbo CR-1000MAX case?

Switching scenes in Alan Wake 2 caused long load times and stutters. I tried adding a rear exhaust fan, but it just created airflow conflicts and made the frame drops worse. I used the GamePP Hardware Sensor Page to identify the GPU as the heat source and switched to High Performance power plan. CrystalDiskMark showed 4K random reads jumping from 45-52MB/s to 68-75MB/s. Disk temps stabilized at 42-55℃. Load times dropped from 12s to 5s, making combat feel instant.