COVID Extensions in Chiang RAI:

What is the procedure and the gotchas of COVID extensions in Chiang Rai? Specifically, do they apply that “under consideration” nonsense like in Chiang Mai, i.e. where they would waste ones valuable passport pages and time by stamping in a under consideration stamp first, and make you come back about 14 days later for another stamp of the remaining days? And is it busy these days? Else, where in the area / neighboring cities can COVID extensions be done smoothly and directly? Thanks.