i am running big ip VE 12.1.3, i found hardware specs on https://clouddocs.f5.com/cloud/public/v1/hyperv/hyperv_setup.html, but i don't know if there is a maximum specs for a vm?
I use 8vcpu/16Gb RAM and i have some latence, could I use 16vcpu/32Gb RAM?
These are the only options you have for deplying VM:
Cores - Memory
1 - 2 Gb
2 - 4 Gb
4 - 8 Gb
8 - 16 Gb
If you assign more cores after that, those cores will be used only for management (control-plane), not for traffic (data-plane).
Your options are:
I just want to add, that though there is restriction and maximum you can set is 8 Cores, this is based on throughput licensing. But if that is not enough for you, you can switch to High-Performace licensing, where there is no throughput limitation and licensing is done solely by vCPU cores. Then you can assign maximum of 24 cores to your VE appliance.