Starting with new SAP development environment SAP Cloud WebIDE has a few drawbacks. First of all network performance problems can dramatically effect your development. Besides your company might not allow you using Cloud WebIDE because of securtiy reasons. For that purposes i highly recommend you to use The Personal Edition of WebIDE. You can download it from https://tools.hana.ondemand.com/#sapui5 . It has trial and productive usage versions. Untill productive usage we are using the Trial one with almost any problem. The only problem was in setup configuration phase. After downloading the files and extract files under C:\SAPWebIDE you also need to configure your destinations under C:\SAPWebIDE\eclipse\config_master\service.destinations\destinations folder.