I went to immigration Hua Hin asked requirements. Was told needed money seasoned by immigration guy but he said his friend upstairs can sort me 'special ' visa.... done 30 day extension as this took me past 60 what he said for seasoned funds. Went back applied 90 days myself and honest immigration lady gave me row for doing 30 day extension told me I wasted money didn't need it as they didn't require seasoned funds.
Always thought the initial 90 days was " always under consideration " crazy rule this. IF 800k not been in 2 months reject application is sensible way. But This is Thailand.