When playing Titanfall 2 (Build 10350970) and in a titan, if you get hit with the Energy Siphon ability from a Monarch class titan it causes the framerate to drop massively until the on screen effect the ability generates disappears.
Settings: (Display mode is usually fullscreen but took this screenshot while windowed)
GPU 7900GRE
Desktop
Win 11 64 bit 23H2 22631.3296
Driver: 24.3.1
Displays connected:
ASUS TUF Gaming VG27A 2560x1440 @165Hz DP
AOC G2460P 1920x1080 @60Hz HDMI
Samsung S23D300 1920x1080 @60Hz HDMI
Valve Index 2880x1600 @120Hz DP
CPU Ryzen 7 5800X
Motherboard Gigabyte Gaming X Rev 1.1 BIOS f38
PSU EVGA SuperNova 750W Platinum
RAM: Corsair Vengeance LPX DDR4 3600MHz 16GB 4x8GB