At the moment, the cost of Bitcoin is inflated, because I see a lot of transactions that can not give to the addressees. Therefore, on the stock exchanges and buy Bitcoin at a price that is listed in the glasses.
Do you mean that the price of BTC will fall to the bottom?
I personally think that the speed of transactions is of course associated with growth, but only indirectly. There is a high probability that Bitcoin will be able to hold positions after that.
The speed of transactions is actually not so important as long as there is no global recognition and, accordingly, the worldwide use of Bitcoin and other cryptocurrencies. I think that when the world comes close to recognizing and introducing Bitcoin and altcoins as a full-fledged payment service, the problem with the speed of transactions will be solved.