Dropped frames ever since upgraded to Windows 10 1803

Hello.
As the title states, I've been getting massive frame drops ever since my windows decided to update to 1803. Everything used to work normally before it but now i can't use SVP since I would get 0-1 present queue in madVR.

What I've tested so far was to use madVR without SVP ( it is working with 0 frames dropped, even when using NGU High Quality , even though i normally use super-xbr 25).
Reinstall Nvidia driver ( latest driver would make SVP to not find the dedicated GPU in SVP, but an older version, such as 391 would make it discoverable again ).
Tried to use SVP with no GPU acceleration, and to reset its settings but still got frame drops, even though sometimes it would take up to a minute for them to drop to 1.
Reinstall SVP and all of its components.

Normally I would get fps drops since MPC wouldn't use my DGPU but I would use nvidia inspector to force MPC to use dedicated GPU, but with this update going to Settings/System/Display/Graphics Settings and choosing to use the High Performance GPU for MPC seems to do the same thing.

I would revert to last windows update, but last time I tried it, it broke my windows.
BTW my CPU is Intel I7 6700 HQ and my DGPU is GTX 970M.

Looking for advices as to what else should I try...