Chrome Version 77.0.3865.90 (Official Build) (64-bit) This is NOT a bug in the Assembler. File created by APNGASM 2.91 with 1/100 delay. Chrome has excessive delay between frames. I can play the APNG using the QtAPNG sample app, and it plays correctly. Any suggestions to work around this feature of Chrome? Even trying 1/1000 did not have much effect. The animation is SLOOOW on the browser.