An update for those on CoViD19 extension, 60 days will be added to your next expiry date in 1 stamp, no longer give a consideration stamp to revisit.
Quick and easy, in and and out in 30 mins.
No 90 days reporting required.
TLDR : Answer Summary
Recent updates indicate that those applying for a CoViD19 visa extension at Bangkok Immigration's Counter K will receive an automatic extension of 60 days added to their expiry date without the need for a consideration stamp. The process is reportedly quick, taking about 30 minutes, and there is no requirement for 90 days reporting.