was your windows 7 32-bit or 64-bit ?
P&G9 came out in 2013 so I reckon it was 32-bit only, but cannot recall for sure; windows 10 did not launch until 2015
whether your OS is 32-bit or 64-bit almost certainly makes little difference to X5 because it dates from a time when OS were 'simple', but P&G9 is likley to have routines and optimisations that are tailtored for win7, not win10; compatibility mode is not guaranteed to fix all these; win 10 now being 64-bit only may compound this - sure the program will run, but not as well as it should perhaps
you have checked you RAM as well as your disks ?
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