I doubt it's an actual error. It only happens on Bitmex, the most well funded derivatives exchange in crypto. They can afford to blow $5 million per year on an office but not to invest in their exchange? Makes zero sense. I'm pretty sure that this system overload "error" is being forced upon their traders purposely to front run them and rekt those betting against their trading desk.
I do think that they should do a system upgrade unless they are doing it on purpose, just like you said. It's almost always the topic on some of my Telegram Groups when that happens. I'm just not sure if they would ever fix it or something.
This was their response 6 months ago.
What I am a fan of are their once a day manual withdrawals because they do not work with hot wallets.
I do like it too, it's doing its safety measures and making sure that they got the right withdrawals. I just wonder if they have a ton of withdrawals per day. They have to manually check it all the time, but I guess it comes with the job. Maybe more and more should do that too.