Rendering issue on iOS devices

Greetings, I develop the FlyWire Codex at Princeton Neuroscience Institute.
My knowledge of neuroglancer is limited, so there's a good chance this is not an issuer rather misuse.
Trying to visualize 3D volumes of brain regions. Here's an example [link](https://ngl.cave-explorer.org/#!%7B%22dimensions%22:%7B%22x%22:%5B4e-9%2C%22m%22%5D%2C%22y%22:%5B4e-9%2C%22m%22%5D%2C%22z%22:%5B4e-8%2C%22m%22%5D%7D%2C%22position%22:%5B132000%2C55390%2C512%5D%2C%22crossSectionScale%22:10.218996058533186%2C%22projectionScale%22:82842.71247461901%2C%22layers%22:%5B%7B%22type%22:%22segmentation%22%2C%22source%22:%22precomputed://gs://flywire_neuropil_meshes/whole_neuropil/brain_mesh_v3%22%2C%22tab%22:%22source%22%2C%22objectAlpha%22:0.1%2C%22hideSegmentZero%22:false%2C%22segments%22:%5B%221%22%5D%2C%22segmentColors%22:%7B%221%22:%22#b5b5b5%22%7D%2C%22name%22:%22brain_mesh_v3%22%7D%2C%7B%22type%22:%22segmentation%22%2C%22source%22:%22precomputed://gs://flywire_neuropil_meshes/neuropils/neuropil_mesh_v141_v3#type=mesh%22%2C%22tab%22:%22source%22%2C%22objectAlpha%22:0.9%2C%22segments%22:%5B%2258%22%2C%2268%22%2C%2235%22%2C%2265%22%5D%2C%22segmentColors%22:%7B%220%22:%22#fdb95d%22%2C%221%22:%22#ffda59%22%2C%222%22:%22#dd41d3%22%2C%223%22:%22#2081f2%22%2C%224%22:%22#ffae79%22%2C%225%22:%22#274bfe%22%2C%226%22:%22#bc21a2%22%2C%227%22:%22#0dbfc2%22%2C%228%22:%22#07c4ac%22%2C%229%22:%22#50bcfe%22%2C%2210%22:%22#ff9e69%22%2C%2211%22:%22#5479ef%22%2C%2212%22:%22#00b5d3%22%2C%2213%22:%22#00957e%22%2C%2214%22:%22#8a34d4%22%2C%2215%22:%22#fdb95d%22%2C%2216%22:%22#3d8ce2%22%2C%2217%22:%22#fe9e3e%22%2C%2218%22:%22#fead49%22%2C%2219%22:%22#febd3b%22%2C%2220%22:%22#fe99b8%22%2C%2221%22:%22#fe9e3f%22%2C%2222%22:%22#4c9efe%22%2C%2223%22:%22#fead49%22%2C%2224%22:%22#4c9efe%22%2C%2225%22:%22#285bfa%22%2C%2226%22:%22#603ee4%22%2C%2227%22:%22#30d2fe%22%2C%2228%22:%22#ffa88d%22%2C%2229%22:%22#bc21a2%22%2C%2230%22:%22#febd3b%22%2C%2231%22:%22#fbb256%22%2C%2232%22:%22#00b5d3%22%2C%2233%22:%22#fbb256%22%2C%2234%22:%22#3d8ce2%22%2C%2235%22:%22#10cac8%22%2C%2236%22:%22#bc21a2%22%2C%2237%22:%22#1a57ee%22%2C%2238%22:%22#0dbfc2%22%2C%2239%22:%22#1a57ee%22%2C%2240%22:%22#02dcc0%22%2C%2241%22:%22#ff9e69%22%2C%2242%22:%22#ffda59%22%2C%2243%22:%22#dd41d3%22%2C%2244%22:%22#02dcc0%22%2C%2245%22:%22#145ddc%22%2C%2246%22:%22#285bfa%22%2C%2247%22:%22#fed942%22%2C%2248%22:%22#ffa88d%22%2C%2249%22:%22#3d89fe%22%2C%2250%22:%22#3b8dfe%22%2C%2251%22:%22#8a34d4%22%2C%2252%22:%22#07c4ac%22%2C%2253%22:%22#513bfe%22%2C%2254%22:%22#fe99b8%22%2C%2255%22:%22#ffae79%22%2C%2256%22:%22#bc21a2%22%2C%2257%22:%22#30d2fe%22%2C%2258%22:%22#21adc4%22%2C%2259%22:%22#50bcfe%22%2C%2260%22:%22#3b8dfe%22%2C%2261%22:%22#000000%22%2C%2262%22:%22#fed942%22%2C%2263%22:%22#feb13a%22%2C%2264%22:%22#00957e%22%2C%2265%22:%22#049a93%22%2C%2266%22:%22#fe9e3f%22%2C%2267%22:%22#fe9e3e%22%2C%2268%22:%22#36cfdc%22%2C%2269%22:%22#3d89fe%22%2C%2270%22:%22#543bfe%22%2C%2271%22:%22#145ddc%22%2C%2272%22:%22#feb13a%22%2C%2273%22:%22#5479ef%22%2C%2274%22:%22#274bfe%22%2C%2275%22:%22#a21a78%22%2C%2276%22:%22#a21a78%22%2C%2277%22:%22#ea4bea%22%7D%2C%22name%22:%22neuropil-regions-surface%22%7D%5D%2C%22showAxisLines%22:false%2C%22showDefaultAnnotations%22:false%2C%22showSlices%22:false%2C%22gpuMemoryLimit%22:2000000000%2C%22selectedLayer%22:%7B%22layer%22:%22neuropil-regions-surface%22%7D%2C%22projectionBackgroundColor%22:%22#ffffff%22%2C%22layout%22:%223d%22%7D). It renders well on mac/win/android but not on iOS devices (iPhone/iPad). Any idea what could be wrong?

Thanks in advance,
Arie