My code was working fine with 2.7-PRO but I just found an issue with 3.1 - PRO. It could have been there in 3.0, I did not check. When using createDocxAndDownload, it takes 15-20 seconds more than before to "download" the file. The temp was was created as fast as before. The code itself completes in the same time as before. The issue seems with the download itself. The browser doesn't appear to know how big the file is and waits and waits for more bytes to come in until it times out. Tested with chrome, safari, firefox and IE and even the low-level wget. Same issue always. My test file is 23KB and looking at the browser download page I can see "downloaded 23KB of ? KB...". I looked at the content-length and it seems to be there but something is wrong for sure.