How to fix 5-8 second stutters during stealth path calculation in Splinter Cell?

Calculation stutters ruined my stealth strategy. Increasing virtual memory made it worse via page file swapping. I used GamePP to raise queue depth from 64 to 256. CrystalDiskMark confirmed 4K writes at 720MB/s. Controller load stabilised, with temp at 46-52℃.