Our cheats hardly impact FPS, in my experience it's about a 10-20% FPS difference with the cheat versus without. So for example if you normally run 100fps in game, you might run between 80-90fps.
This all depends on the hardware you are currently running though.
I run a 2060 Super, i7 8700 with 32GB of ram running at 1440P, below will be some examples of my FPS with our cheat.
MW2019: 110fps
WZ2: 120fps
Dead by Daylight: 90fps
Hell Let Loose: 60-90fps depending on the map
BF3/4/5: all ran over 100FPS for me
Halo Infinite: 90-100fps, depending on map and engagements