Equalizer APO is a free software which adds zero delay to your audio latency. Some users experience noticable audio latency delays when using programs like Voicemeeter Banana, so this is a better option for gaming in my opinion. Some prefer the software called Peace Equalizer which is simply a interface for Equalizer APO, but it will limit your options for more advanced usage.
PUBG is known for causing hearing damage over time if played at a high volume, and Equalizer APO gives you a lot of options to lower your in game sounds without loosing the ability to hear footsteps.
Download Equalizer APO, and start the .exe file to go to setup wizard.
Click Next and Agree until you are asked to select the device to install APO for.