BaM is taking a very long time to load on ChromeOS and Android

[oliver-phet]

@mattpen found that on his Android and Chromebook devices, BaM takes quite a while to load. Android phone ~20 seconds. Chromebook ~10 seconds. @KatieWoe can you describe the devices you have tested BaM and note their load performance:

Device and OS Version	Load time
Device 1	Load time 1
Device 2	Load time 2

[KatieWoe]

Used published for this

Device and OS Version	Load time
Win 10 Chrome	5.39 sec
Win 10 Firefox	4 sec
Mac 11 Safari	3.66 sec
iPad 14	5.7 sec
ChromeOS	31 sec
Android Tablet	43.25 sec

[mattpen]

Assigning to @jonathanolson since he is the responsible dev for build-a-molecule.

[jonathanolson]

This is partially expected, it has to load a LOT of data. @oliver-phet, any preferences on the balance between load-time of the sim and download size? At a certain level there's a tradeoff, but I could take a look into optimizing things (I'm sure I could help improve things).

[oliver-phet]

@jonathanolson do you have a perspective on why the sim takes so much longer to load on Android and Chrome specifically? When I load the sim on my iPhone (in our iOS app or mobile safari) the sim only takes ~3 seconds to load. I appreciate the tradeoff between load-time and download size, but it is surprising that those two platforms are experiencing such long load times.

[jonathanolson]

do you have a perspective on why the sim takes so much longer to load on Android and Chrome specifically?

I'm not sure. It's a very specific CPU task that allocates a lot of memory. It's probably fairly dependent on the CPU and memory, and heavily dependent on browser optimizations and GC.

[jonathanolson]

I could profile it presumably to see why this might be happening?

[oliver-phet]

Yes, @jonathanolson profiling sounds like the next best step! This would be good to diagnose before our next Chromebook app goes out.