God damn shitcoiners. At least it’s costing them

is it primarily bandwidth / data transfer, or cpu for consensus validation, that's bottlenecking?

Earlier this week I installed bitcoin core on a new Lenovo laptop running Fedora 40. The entire IBD was done in under 14 hours, over home Wi-Fi.

The takeaway from this is: IBD is extremely sensitive to hardware. You get what you pay for.

I don’t think a Raspberry-Pi should be the basis for any inference about bitcoin, the BTC blockchain, or the bitcoin network.

The other consideration here is, maybe you are seeing poor Tor network connection quality.

You could always pause your node, turn off Tor, and finish your initial block download over a clear network.