So, yeah seems like it's impossible to send BTM right now.
Any idea to fix this? (which doesn't include more miners)
Maybe take a look at Viacoin.
It is possible to send quickly, it is however very slow to confirm.
We have discussed difficulty algorithms at length for many weeks. We've discussed every approach of every moderately successful currency, and many other new proposals in addition to this.
Every proposal comes at the cost of increasing supply when demand is low, or opening the chain to attack vectors, or introduce larger compounded problems which damage the economy as a whole both now and in the future.
The community still wishes to find a difficulty algorithm which does not alter the coin emission, but as yet we have not found one. That includes AntiGravityWave, KGW, DGW, and everything else implemented in other currencies, they all keep a relatively stable block time, at the cost of lowering the production cost and maintaining a constant supply of currency regardless of demand.
Our difficulty calculation is the same as Bitcoin, if the hashrate of Bitcoin ever drops, they will experience the same, compounded over a much longer period since their diff change is far less frequent than our 720 block change.
The issue is self resolving over time, as demand raises so does price-tag due to limited supply, as does liquidity, which increases mining profitability (fallacy, you can't calculate this), which brings in miners. Once market liquidity increases due to demand then hashing stabilizes and diff changes become less severe. Increasing usage is key.
The alternative is to reduce production cost to match price-tag on market, which creates excess supply, and pushes market price downwards - go to beginning of sentence and repeat. Please do check the metrics of all PoW currencies with modified diff algorithms, and see the pattern for yourself.
Without changing difficulty, we have the cost of slow transaction confirmations on a barely used network, and the benefit of a greatly reduced coin supply when demand is low. BTM Supply: 925,820 BTM, and we had planned: 2,242,480 BTM by this time - there is 1,316,660 less BTM in the world. Hoarding and market crashing is greatly reduced whilst we work to increase usage. When BTM is being used, it will naturally be more liquid and mined more consistently.