[BUG REPORT]/[PROBLEM] UP Studio runs slower when using NVIDIA dedicated graphics card.

[erichuang17]

My laptop is Xiaomi Mi Notebook Pro.
The UP Studio run slow on previewing layers so I tried to adjust the graphics settings...
I have tried the lowest quality and best performance setting in NVIDIA control panel.
I have even overclocked my GPU.
However, it still turned out to be slower than the intergrated graphics card.
The previewing performance on the NVIDIA card is bad (≈10-25fps)
The previewing performanceon integrated graphics is good (≈40-50fps)
(all of the tests are done with 0.35mm layer height preview with linear view off)

Software Version: UP Studio 2.4.5.351

Spec:
CPU: i7-8550U@1.8GHz Turbo Boost up to 4.00GHz (TDP modified from 15W to 44W with Intel XTU)
GPU 0: Intel(R) UHD Graphics 620
GPU 1: NVIDIA GeForce MX150
RAM: 16GB-DualChannel@2.4GHz
NVME: SAMSUNG MZVLW256HEHP-00000


(below is the info from task manager)

GPU 0

Driver version: 24.20.100.6194
Driver date: 06/20/2018
DirectX version: 12 (FL 12.1)
Physical location: PCI bus 0, device 2, function 0

Utilization 3%
Dedicated GPU memory 0.0/2.0 GB
Shared GPU memory 0.2/7.9 GB
GPU Memory 0.2/7.9 GB

GPU 1

NVIDIA GeForce MX150

Driver version: 24.21.13.9907
Driver date: 08/21/2018
DirectX version: 12 (FL 12.1)
Physical location: PCI bus 1, device 0, function 0

Utilization 0%
Dedicated GPU memory 0.0/2.0 GB
Shared GPU memory 0.0/7.9 GB
GPU Memory 0.0/9.9 GB

CPU

Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz

Base speed: 2.00 GHz
Sockets: 1
Cores: 4
Logical processors: 8
Virtualization: Enabled
L1 cache: 256 KB
L2 cache: 1.0 MB
L3 cache: 8.0 MB

Utilization 7%
Speed 1.75 GHz
Up time 1:23:39:21
Processes 289
Threads 4379
Handles 145866

Disk 0 (C:)

SAMSUNG MZVLW256HEHP-00000

Capacity: 239 GB
Formatted: 239 GB
System disk: Yes
Page file: Yes

Read speed 0 KB/s
Write speed 36.8 KB/s
Active time 0%
Average response time 0.2 ms