How can I increase my W10 vm's performance?

Excuse me for not explaining each option that I have given.
I’ll explain to you, at my best of ability. I am no expert what is going on underwater, I can only give you what I see.

First off, Cool and Quiet option is removed in later version of AGESA, resulting in this suggestion becoming obsolete. As for why I decided to disable that is due to weird performance degradation I found in the diagnosis of my system. This is detailed in my thread.

Secondly, I retract the statement of removing rcu_nocbs from GRUB, because I found out that it DIDN’T affect boosting. However, nohz_full, not nohz, you’ll have to remove that from GRUB. From what I can see, it just locks the CPU in its base frequency. I have firm believe it isn’t a placebo, because running a CPU intensive benchmark like Cinebench R20 really does show lower score.

I have a separate thread on fixing CPU core boosting on isolated cpus e.g; isolcpus.
https://forum.level1techs.com/t/isolated-cpu-cores-not-boosting-fix/152806/2

Edit:
I have to say that I misread your question. It was:

One issue I noticed is that HWINFO does not report my CPU ever boosting beyond the base 3.4ghz speed. Is there a way to enable boosting?

You only see your CPU base frequency in virtualized environment. In this case Windows 10. However, your CPU is indeed boosting, only when you don’t have nohz_full in your grub. You can validate that with this command in linux:

watch -n.1 “cat /proc/cpuinfo | grep “^[c]pu Mhz””

Or a slower version of the above with CPU core count.

watch -n.1 cpupower monitor