RPCS3 (almost) not using GPU

I am trying to run Skylanders Imaginators, but I get low FPS and sound problems. I checked the task manager to see what the bottleneck is, and I saw that the CPU is 100% used but the GPU is barley used at all. I noticed that in some games (on RPCS3) the GPU is used only in menus, and not in gameplay. I searched the settings but I couldn't find a "use GPU" option. I have found only 1 post about it on reddit, but in that case the post's writer had a terrible CPU and the GPU just waited for it, but I don't think it's my problem because I have a good CPU.

screenshot of he emulator with the task manager: https://imgur.com/a/FO7HooR

log: https://www.mediafire.com/file/xbozxinf1...og.gz/file

system info:
CPU: Intel® Core™ i7-7700 CPU @ 3.60GHz

Base speed: 3.60 GHz
Sockets: 1
Cores: 4
Logical processors: 8
Virtualization: Disabled
Hyper-V support: Yes
L1 cache: 256 KB
L2 cache: 1.0 MB
L3 cache: 8.0 MB

GPU: NVIDIA GeForce RTX 2080 SUPER

Driver version: 27.21.14.6611
Driver date: 4/12/2021
DirectX version: 12 (FL 12.1)
Physical location: PCI bus 1, device 0, function 0

RAM: 16 GB

Speed: 2400 MHz
Form factor: DIMM
Hardware reserved: 75.0 MB

OS: Windows 10 Pro
version: 2004
build: 19041.928