OK. Try this:

From the Launcher, choose Empty Scene.

Choose Props > Interior Sets > MA Bedroom > !!!Preload.  That will load the entire scene.

Choose Lights > INterior Sets > MA Bedroom > MABedroom_SuperFly lights

Choose Cameras > Interior Sets > MA Bedroom > Camera 4.

Set your Optix render settings.  Quality doesn't matter because we are testing PostFX.  Just let the render finish (if it can)

After the render is done, a thumbnail should appear at the top of the recent renders palette.

Right-click on the thumb and choose Edit Post Effects.

Check Apply Intel Denoise and enable Bloom.

Does that work for you?