I have the same issue, but I`m sure that is DCS fault. When micro stutters appear my GPU load decrees to 0% and then GPU load increases to 100 %. This happens only in DCS after July patches, in a stable and open beta version of DCS. I`m willing to believe that is my computer fault BUT, other sims like X-Plane, IL-2 Sturmovik run well. There are no fluctuations GPU and micro stutters. GPU load is 98-100%. Other games also work perfectly.
This issue is only in DCS, before July`s patches everything works fine in DCS.
So I`m tired of checking any configurations in DCS. Till it would be resolved I won`t buy anything from ED and third party for DCS. I know that my voice is insignificant, especially that this issue is random and most users won`t complain. But this shows that DCS is a mess.
I have Ryzen 5 3600, RX590, SSD drives in my computer.