perhaps because something is abusing your pagefile or something is wrong with your system
windows automatically adjusts pagefile size by your usage or crash frequency
by the way, your memory usage is too much which may force windows to push more blocks of memory to pagefile => increase in size dynamically
you can lower pagefile size to around 1GB (both initial and maximum sizes) because you have a lot of RAM to use. If you have crash due to out-of-memory -> increase to 2GB => something is wrong to your PC. I have 8GB RAM and 0MB pagefile but rarely have any issue
the larger the size of pagefile (being actively used) may equal to slower system performance and faster SSD degradation
If you see Your system is low on virtual memory message, when you try to start memory intensive applications, increase page file size in Windows 11/10.
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