Projects taking a while to play properly after loading

Has anyone else had the problem where a projects sounds will not play properly for around 5 seconds after loading a new project?

It plays other sounds initially and then after a few secs it will switch to the correct sounds. Seems like the project is still loading for a while after it has already confirmed it has loaded.

Depends on the gear you are talking about … doesn’t seem too impossible when the device is still loading waves to RAM (OT, DT, AR)