Creating PPT with Perl - error 0x8001010a "application is busy"

actually I'm writing a Perl script for creating a powerpoint presentation automatically. The reason for this is, that I need really much Slides with the same look.

So I always copy the first slide and just update the text in the boxes with new text out of a excel file.

ATM it works fine but rly unstable, so sometimes the PP is created successfully and sometimes the creation is interrupted with the error

Win32::OLE<0.1712> error 08001010a: "The message filter indicated that the application is busy" in Method/Propertyget "TextFrame" at [Pfad] line 150

Would be nice if someone could help me to fix that or explain to me where this error comes from