NieR Replicant [BLJM60223] suddenly having random periods of low FPS

i've been working through the game and, up until this point, it was running smoothly with a consistent fps. after i finished the barren temple, the fps has started to drop down to single digits for no reason that i can figure out. i was initially using an older version of RPCS3 (0.0.29-15694) but the performance did not improve from attempting to play on the newest version.
i've been using the configurations recommended here for the game and i've attached the logs from both the older version and the newer version.


  log from latest version.7z (Size: 889.71 KB / Downloads: 0)

  log from older version.7z (Size: 466.58 KB / Downloads: 0)