Does installing windows reduces lag on MacBook?

Calvin_BT wrote:

Now You dont respond and confused in the discussions

You are asking about a third party app in the Windows Compatibility Community. Your question has nothing to do with Windows Compatibility, the subject of this Community.

Maybe try asking your question at the OBS site: https://obsproject.com/

Your question makes little sense. Reduce lag in what? If you mean lag in the MacOS and you installed Windows using Boot Camp then your question makes no sense since the MacOS is not running when booted into Windows.