How to fix FPS drops from 80 to 45 in Dead Space 2 Remake with Gloway?

The high-precision lighting created bottlenecks, causing FPS to plummet from 80 to 45 in narrow corridors. I tried forcing single-channel mode in BIOS for stability, but bandwidth was halved and loading times tripled per AIDA64. I used the GamePP Resource Scheduler to set the memory controller priority to highest and adjusted voltage to 1.36V via BIOS monitor. Latency converged to 82-88ns per AIDA64, and RAM temperature remained at 42-48℃ per HWMonitor.