I am noticing a delay of 5 to 15 seconds when printing using the DYMO Label Web Service starting this morning, 4/23/2018. This happens on multiple PCs on all browsers. On a Mac it works fine.
The log at %LocalAppData%\DYMO\DLS8\DLSWebService.log seems to show the delay. I don't see any errors in the Console beyond the usual Synchronous XMLHttpRequest on the main thread is deprecated warning.
DYMO.DLS.Printing.Host.exe Information: 0 : PrintLabel: DYMO LabelWriter 450 Turbo
DateTime=2018-04-23T17:08:34.9541652Z
DYMO.DLS.Printing.Host.exe Information: 0 : Loading barcode lib from C:\Program Files (x86)\DYMO\DYMO Label Software\MDYMOBarcode.dll
DateTime=2018-04-23T17:08:50.1456872Z
DYMO.DLS.Printing.Host.exe Information: 0 : Utils.CreateLabelPrintParams(): printParams == null, creating default printParams based on printer type
DateTime=2018-04-23T17:08:50.1547276Z
Status for job sent to printer DYMO LabelWriter 450 Turbo i False
DYMO.DLS.Printing.Host.exe Information: 0 : CheckServiceStatus
DateTime=2018-04-23T17:08:51.3098746Z
DYMO.DLS.Printing.Host.exe Information: 0 : GetPrinters
DateTime=2018-04-23T17:08:51.3269198Z
I tried updating to DLS8Setup.8.7.exe but this did not help.