Just got approved for DTV and sharing my timeline here.
Canadian, applied in Canada. (Handled by Thai Consulate Ottawa, application fee: $650 CAD = ~15500 THB)
Dec 24 - submitted application, attached proof of balance, employment letter
Dec 27 - additional documents requested:
1. Letter from the company explicitily stating that my work can be done remotely
2. Company registration document showing that the company is legitimately up and running.
-> HR provided me these
Dec 30 -> submitted above two additional documents
Jan 3 -> approved
Considering it was a holiday season, im quite impressed how quickly this was done.