Help Mixing Fluids

[josemendez]

It made a difference my frame rate is around 36 now but it suddenly drops down to 27 then jump backs up,   I have attached the profiler ,

Yes, as you can see in the profiler the time spent in collision detection been reduced from 5ms down to 2.4ms, and collision resolution from 4.38ms to 1.15ms. That's "only" 2.7 times faster

The frame rate spikes could be due to physics being updated more than once during certain frames. Check how many times is FixedUpdate being called during these spikes, if it's more than once, lower your maximum fixed timestep or slightly increase your fixed timestep (both found in Unity's Time settings)

The next bottleneck in your frame is particle mesh generation which takes around 10 ms, or 60% of the frame time. This should usually be much faster, I've tested 3000 particles in a dual core i5 and it takes roughly 3 ms to generate them. What cpu do you have?

Keep in mind that Obi runs in the CPU though. 3000 particles is too much for most mobile devices. Total count should be around 1000-1500 particles for a mid-tier mobile cpu.