Im using the amd version d4as v5 and that can happen from time to time but is not normal. Usually some security scan or backend windows thing that started. Premium storage can help improve things. I use it from home and on prem with all traffic routed through netskope as well. Maybe it is what your running? Im mainly in Azure portal or vscode. We have devs and such using same size. Most the complaints are speed of light problems from devs in India/Pakistan/Phillipines involving presentation to end user whether login or response of dev tools. But that is same I had in Citrix