Hi @Preet_pk ,
Maybe you configure multipule Modules as nominal in your Bigip against SWAP allocated memory ,
I will send some Linkes explain F5 memory high utilization in general and SWAP memory as well :
> https://support.f5.com/csp/article/K55227819 >>> For Swap memory
this is an old enquiry for SWAP memory as well
you will find in this Link another 3 links shows F5 memory overview for more comprehensive and SWAP memory issues
Hope you find it useful.