hi you may need to add a 64GB pagefile.sys, which I documented in
Install a bigger pagefile.sys
ue 5.3 using much more memory for import/export of static mesh and the error is typically like that for some reason you have only limited information on dump also 5.3 is entirely 64bit but some of your code is ue4 user32 bit you open many instances using up memory and 32bit structures are automatically converted to 64bit due to the addition of Substrate materials
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