FYI.
The situation has no doubt changed by now.
I thought the instability I was having was stricly an Arc problem. But even afterwards I was suffering the same problem with my newer Nvidia GPU, only Rhino crashed out hard instantly with similar operations.
If you are having issues, you can raise tickets in the “Intel Insiders” discord, and I think they also have a Git location to raise tickets.
Up to December I would have said always generally buy an Nvidia. However given thier low-level trend of setting on fire, crashing, bricking themselves, and black-screening nowadays… who knows.
Be careful what you buy in terms of Arc, as modern offerings come in two flavours; laptops with discrete Arc GPUs (separate to CPU), and those that are on things like Meteor Lake, where there is an integrated Arc GPU “tile” that is not as strong.
For the first generation Arc GPUs (Alchemist), they can generally be found in either flavour. Second generation (Battlemage, Xe2) has no known discrete mobile application, except where it is contained as an integrated GPU on the efficiency-focused Lunar Lake CPUs. You probably wouldn’t want a Lunar Lake CPU for Rhino, but they should work.