i was going trough all forum treads and finally what worked for me was quite obvious thing. First i used affinity to place dcs on cores not treads. On treads it had same fps but felt a lot sluggish, duno why is that. Then the big difference was disabling windows defender, which im not even using lol. My gpu usage always was jumping up and down, and dcs was unplayable, but not stable 99-100% usage with steady frames. its just day one, but i tried a lot of servers a lot of modules and terrains and they all worked, smooth as ice. hope this will help someone o7
R5 2600X
RTX2070s
ram 4x8gb @ 2933
dcs is on m2 drive