Performance problems

Hey, I'm having really big impacts on my performance since 2 weeks. I've been using SweetFX for 3 months, and everything was okay. But these days I've been having a trouble: everygame with SweetFX or Reshade runs at 10-15 fps. I don't know, but it takes A LOT of my FPS. Please tell me what to do, because once you try SweetFX, you can't play with it. For example, yesterday, I ran the ReShade Setup Tool of ReShade with SweetFX 2.0 on Dragon's Dogma Dark Arisen, and even in the main menu, I had like 30 fps. My ingame FPS were like 10-15 fps. Also, when I don't have any ReShade files in the game directory (I deleted all my Dragon's Dogma Dark Arisen files and reinstalled them again) and change the area I am on this game, my FPS are again at 10-15. For fixing it, all I do is (Windows Key +Tab Key).Without ReShade, I have a normal performance with little hit on it. The thing is that this also happens in all my games, when I use ReShade. I have to say that I'm on Windows 10, but the problem started using Windows 8.1 Pro. I always have my Nvidia drivers up to date. Some of my PC specs:
GTX 660
Intel Core i5 4440 3.1 GHz
8 GB RAM

The preset I'm using is this

sfx.thelazy.net/games/preset/5006/

I recorded an ingame video. If you need more information or if you want to see the video, I can upload it. Just tell me.

Thanks!!!

I don't know if anyone knows about my problem, but I want to know if someone has solution, I can't sometimes play my games because of the low FPS, please help!!

LosKiwa wrote: For fixing it, all I do is (Windows Key +Tab Key).

This resets most of the resources stored on the GPU. So it sounds like your VRAM is filling up quickly and the system can't handle it. ReShade requires quite a bit of memory too depending on the number and kind of effects enabled, so that only makes things worse. Check your VRAM utilization and try lowering texture quality and similar in the game settings and make sure no additional software is running (other injectors, or apps that use GPU memory themselves).