Auto Brightness

Hello, I have some issues when I try to play on full screen mode with the player it automatically goes in full brightness by itself, then
in maximized windows it goes back to normal I am using the latest update and this only happen in full screen mode also this only happen with this specific player
here are some specs of the system:

#####  System Information  #####

OS:           Windows 10 Home (10.00.18362) (x64)
CPU name:     Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
CPU details:  2808 MHz | 8 core(s) | Family 6 Model 158 Stepping 9
Memory:       16352 MB
Screen size:  1920x1080 (32bits) (75Hz)
GPU:          NVIDIA GeForce GTX 1060
             VendorID: 10de, DeviceID: 1c60, SubSys: 11791025
GPU memory:   6144 MB
GPU driver:   nvldumdx.dll (Version 26.21.14.4166) (12-6-2019) (NV 441.66)
Audio device: Realtek High Definition Audio
             VendorID: 10ec, DeviceID: 0255, SubSys: 10251179
Audio driver: RTKVHD64.sys (Version 6.0.1.7945) (9-29-2016)

#####  K-Lite Codec Pack  #####

KLCP version: 15.7.0
KLCP type:    full

Speaker conf: 2.0

MPC renderer: EVR CP
MPC subs:     ISR
MPC audio:    Internal Audio Renderer
MPC decoder:  h264=DXVA2N hevc=DXVA2N vp9=DXVA2N vc1=0 mpeg2=0

#####  Decoder Settings #####

LAV Video:
H264=DXVA2CB HEVC=DXVA2CB VP9=DXVA2CB VC1=0 MPEG2=1 MPEG4=1 WMV3=0

LAV Audio:
MP3=1 AC3=1 DTS=1 DTSHD=1 EAC3=1 TRUEHD=1 AAC=1 Vorbis=1 LPCM=1 WMA=0

#####  DirectShow Filters (32-bit)  #####

(A total of 80 filters, 0 shown, 80 hidden)

#####  DirectShow Filters (64-bit)  #####

(A total of 72 filters, 0 shown, 72 hidden)

#####  ICM Class Manager (32-bit)  #####

(A total of 2 filters, 0 shown, 2 hidden)

#####  ICM Class Manager (64-bit)  #####

(A total of 2 filters, 0 shown, 2 hidden)

#####  Default source filters (32-bit)  #####

(A total of 64 default source filters, 0 shown, 64 hidden)

#####  Default source filters (64-bit)  #####

(A total of 56 default source filters, 0 shown, 56 hidden)

#####  ACM and VFW Codecs (32-bit)  #####

Description:  <none>
ID:           VIDC.FMVC
File name:    c:\windows\syswow64\fmcodec.dll

(A total of 16 codecs, 1 shown, 15 hidden)

#####  ACM and VFW Codecs (64-bit)  #####

(A total of 14 codecs, 0 shown, 14 hidden)

The player itself does not change the brightness like this.

Open the Windows 10 settings and search for "Adaptive brightnes". Disable that.
https://answers.microsoft.com/en-us/windows/forum/all/how-to-disable-adaptive-brightness-in-windows-10/bf5b0042-5a4d-4da0-80f1-7335fb791572

It is also possible that an application on your computer is automatically switching between power plans on your system when it detects a fullscreen application/game. Adjust the power plans settings to same brightness level in each plan.

I looked for other apps that made cause it and now it works normal again thanks for the advice.