Hi, that specs are mostly for an entry to mid level and some parts may be limiting others.
Example, the Prime board is not able to use the nvme PCIe 4 to its fullest and the wraith is a very humble solution for cooling. The 5600GT doesnt make sense with a RX6600, although I understand that at the time of purchase, the RX wasnt a reality yet.
My recommendation, use it as is and save the money for a big upgrade.
Later on if budget is an issue, get a 7700X, the price should drop along with the Zen5 release.
As for the slowdons, if you use for typical office workloads, you shouldn't be having any, I inclined to think thats software issues.
Maybe you can explain what kind of slowdons you are having.
The Englishman