I used ViaBTC only to speed up transactions that were stuck waiting for confirmations. A few months ago, I really liked the service, and transactions went through significantly faster. It is also referred to as a transaction accelerator. I was especially pleased that the site does not require payment for this service, which immediately attracted me. I noticed that it works best to enter the data 5 minutes before the end of each hour and about 20 minutes after the start of a new hour, and this should be done until the system accepts the data. This worked until recently. Previously, a transaction would take a maximum of one day, often 2-3 hours. Now I can't understand what happened to the accelerator: perhaps the number of people wanting to use it has increased, or it has simply become less effective, but at the moment a transaction can be delayed for 2-3 days.
