You are facing performance problem if you logon a system with different language.
For example, the performance is good if logon a system with JA, but if you logon with other Non-English language, you may face Performance issue.
SAP GUI for Windows
Character set, Cyrillic character, Performance, Sap gui, Easy Access Menu, slow, loading SAP GUI screen; scroll; Slow; Bad , KBA , BC-FES-GUI , Graphical User Interface , Problem
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