koobas.hobune.stream
HDRP Reflection probes cause terrible framerate
We're using the HDRP. There are 5 reflection probes in the scene. When the probes are turned OFF, the scene works smoothly (300+ FPS). When then probes are ON, though, FPS drops to 10-15 (both in game and in editor).
Here are the probe settings (all 5 are like this, except for the box sizes): 
reflections are expensive.... they cause another camera render of everything within range of the probe in the specified cull mask. Make that far clip plane as small as possible... its unlikely you would see reflections to such a large distance as 50.... start small (maybe 5) and increase to what looks ok. Also try using those masks to remove as many objects as possible.... you dont really need to rendy small stuff... so maybe try to only reflect the main large items... stick those in a layer together (if possible)
maybe also disable each one if not close enough to the camera to see the reflecting object at a decent size.
for something simpler/cheaper or LOD, just use environment mapped legacy reflective diffuse shader.
Thanks for your input, we will try it and see what happens :)
We left only 1 reflection probe, set it's distance to 10, but framerate still drops...This shouldn't be this way, something is wrong
Don’t use real-time, bake them instead, real-time is very very expensive
