Not exactly visa related, but anyone have insight on current timing at BKK?

My daughter is arriving at BKK on an international flight, with only a 2:20 layover to catch to a domestic flight on VietJet. She has 1 bag to check (on a Deluxe ticket so theoretically should be a slightly faster check-in).

I'd usually guess around 1 hour to pass immigration and collect baggage, which would leave 1:20 for check-in & domestic security, but if queues are longer, I fear that's too tight.

Also, unfortunately the next flight I can change to is 4 hours later, but would save our money from getting burnt up from a late check-in.

Going to Thailand and have a 12 hour lay over in Seoul. I have a "Scotty" jacket thanks to Scott Jordan (it has a LOT of pockets) so I am carrying my meds, contacts, passport, credit cards, toothbrush,cell phone and charger and more. So my carry on is small but I do have that long lay over in Seoul. So do I check my 1 bag or do I carry it on?