Just FYI... Please delete this post if not appropriate...
I heard that the passport control counters are crazily crowded at Suvarnabhumi this morning from one of my friends. About 1+ hour ago, the waiting line for passport control was continued to upper floor just after the security screening. (which I never heard nor saw so far)
Hope it is getting shorter now, not getting longer.
If anybody is flying out from Suvarnabhumi, hope you would catch your flight without any problem.
TLDR : Answer Summary
A user shared a concern about long waiting lines for passport control at Suvarnabhumi Airport, noting that the lines extended to the upper floor after security screening this morning. They hope the situation improves for travelers. Comments from others emphasize the importance of arriving at the airport at least 3 hours before a flight to avoid delays.