The fact is, something like 10% of the bitcoin network jumped over to mine it. I don't think they were expecting that, and I don't think any coin could support that much right away without any hiccups. (Have any other alts had that much power at launch and managed fine?)
No, dozens of other coins have experienced similar growth with no problems and many of them included new/experimental features unlike paycoin.
Jimmothy is right. A lot of new coins get hit by a large amount of hash upon initial launch because people mine it at low difficulties and dump right away to BTC once the coin hits an exchange.
https://bitinfocharts.com/comparison/hashrate-doge.html >> Went from 23.79MH to 180 to 236 over 3 days. After a week, it was at 3.06GH. Bear in mind that it usually is 100MH on Sha256 to 100kH on Scrypt, so Doge had the equivalent of 23GH on it initially.
Also see BitcoinDark. SHA256, short POW, and also had a lot of rentals on it - quite similar to XPY scenario. I didn't mine it directly, but I'm sure many renters did with my rigs, rental prices were crazy. I don't recall any issues at that time.