Splinter Cell: Double Agent - Moving the camera causes the FPS to drop

[TGP482]

Essentially when standing still or moving Sam without also moving the camera the framerate is fine, as soon as I begin moving the camera though it starts to drop. Here it drops into the mid 40's towards the end:

Splinter.Cell.Double.Agent.2026.03.18.-.03.12.22.04.mp4

Not an issue without the fix:

Splinter.Cell.Double.Agent.2026.03.18.-.03.23.34.06.mp4