A group of The First Descendant players discovered an incredible exploit/oversight. Basically, the more FPS you have on your screen, the more damage you do. This basically means you need to buy a better TV or monitor to take advantage of this method.
The First Descendant – Before You Buy
On July 18, content creator Ryechews Games posted a video explaining how to perform the exploit. Ryechews and a few people on his Discord channel initially thought it was a glitch with one of the game's weapons, but it turned out to be related to the number of frames The First Descendant generates in a second.
To take advantage of this feature, all you need to do is disable the V-sync setting, set the frame limit to 120 or 144 (anything above doesn't matter much), and enable additional frame generation settings such as AMD FSR or Nvidia Reflex Low Latency.
The damage increase is approximately 25 percent from 40 to 144 FPS. Modules that further increase your rate of fire are not taken into account.