You know who's not loving Bitcoin's rise? Speed freaks.

Bitcoin is having a moment. In addition to becoming the talk of the town, its staggering price rise over the last 12 months has made some early holders of the cryptocurrency exorbitantly wealthy.

But not everyone is riding that high. In fact, it's directly contributed to frustrated would-be Bitcoin transactors chasing a high of a different sort: specifically, the one provided by their drug of choice.

It seems that the growth of Bitcoin's popularity has brought with it some challenges to the dark-web marketplaces that exchange cryptocurrency for illicit goods and services, and people are pissed. The transfer fees, you see, have gotten too damn high.

What once was a pseudonymous way to buy bricks of cocaine has transformed into a relatively illiquid store of value. Transferring BTC from your wallet to your dark market of choice now costs you a pretty Satoshi — a bunch of them, actually.

And why is that? At present, the number of transactions that can take place on the blockchain is limited to around 7 per second. In Bitcoin's early days, this was way more than enough capacity to handle the volume of trading. Now? Not so much. As such, there can be long waits for transactions to confirm — unless you pay a transaction fee, that is. Those fees help your request cut the proverbial line, but as the line gets longer, those fees get higher.

And, as a number of posts this week on Reddit make clear, this is NOT COOL.

"[Why] is it so high and will it ever go down as i only make small orders and having to pay £15 fee is stupid high," wrote one individual on the Dream Market Reddit page.

Even a relatively low fee seemed excessive to a would-be buyer transferring his or her BTC into a dark market ahead of a presumed purchase.

"I just made a transfer of $70 from my electrum to the market with a fee of around $10 worth of mbtc," wrote the individual on a dark-market focused Reddit page. "When should I expect this to confirm? I understand a $10 bitcoin fee is low right now but I wasn't expecting it to be as high as it was..."

Original image has been replaced. Credit: Mashable

Some aggravated buyers are even pressing markets to accept other forms of cryptocurrency, such as Monero or Bitcoin Cash.

"Fuck Bitcoin and fuck its bullshit fees," reads the title of another DM Reddit thread. "VENDORS PLEASE PLEASE PLEASE ACCEPT BITCOIN CASH," notes the post.

Others are just hoping for some way to skirt the fees.

"The BTC transaction fee has made buying from DNM untenable for me," noted another. "Is there a way round this? None of the markets seem to take alt-coins."

What's next

Whether you're buying concert tickets, Airbnbs, or supposedly 85-percent pure MDMA crystals, no one likes paying fees.

And while people looking to score questionably legal items like bags of uncut amphetamine sulfate powder have only a few online options — and those options may only accept Bitcoin — those hoping to use their cryptocurrency for legal transactions may have the luxury of using altcoins with significantly lower transaction fees.

Whether dark markets like Dream Market will eventually start accepting cryptocurrency other than Bitcoin is anyone's guess, but, ya know, the customer is always right and all that — perhaps especially when that customer is furiously trying to score.