4K mkv video play but lags, and missing equalizer

Hello everyone!
I am using Lenovo V145-15AST laptop running Windows 10(64 Bit)(Home Edition) November Update 2019. I recently installed K-lite Codec Pack Mega Edition, 1st thanks to team Codec Guide to made better and more stable multimedia player, better than VLC.

Now my 1st problem is 4K mkv videos are playing but lags during play. I checked some videos to another expensive laptops, videos are playing well, I mean there is no issues on videos, but my laptop not playing well 4K videos, how to fix this. I recently bought new laptop.

And 2nd problem is equalizer is missing, so unable to customize audio quality, I know there is no issue in default audio setting, but as compare to other multimedia players, equalizer is missing.

About MPC-HC showing below:

MPC-HC (Nightly, 64-bit)
------------------------

Build information:
   Version:            1.8.8.22 (f7a1421a8)
   Compiler:           MSVC v19.16.27034
   Build date:         Nov 15 2019

LAV Filters:
   LAV Splitter:       0.74.1.30
   LAV Video:          0.74.1.30
   LAV Audio:          0.74.1.30
   FFmpeg compiler:    MinGW-w64 GCC 9.2.0

Operating system:
   Name:               Windows NT 10.0 (build 18363)
   Version:            10.0 (64-bit)

Hardware:
   CPU:                AMD A6-9225 RADEON R4, 5 COMPUTE CORES 2C+3G
   GPU:                AMD Radeon(TM) R4 Graphics (driver version: 26.20.15002.61)

First check that hardware decoding is working correctly. You should see "H/W" in the status bar of MPC-HC when it is active. CPU usage should be low. If it is not working, then copy MediaInfo details for the file here.

If decoding performance is not the case, then certain settings in the graphics driver can cause issues. FreeSync and Enhanced Sync should be disabled.

Does the lagging only happen in fullscreen of also with a maximized window?

You can get equalizer by using ffdshow audio processor or AC3Filter. Those can be selected during installation.

Thank you so much for reply
1. Yes, I noticed that "Playing [H/W]" status not appearing when I play 4K MKV video, only shows "Playing".
But when I play 1080p videos and lower resolution videos, then "Playing [H/W]" status always appears.
2. Yes, FreeSync is disabled by default in my AMD Radeon Software.
3. Yes, lagging happen in "both full screen and maximized window".
4. And thanks to share information for equalizer, it is available in Codec Tweak Tool. Yup! pretty helpful.

I am sharing media info:

General
Unique ID : 120195608367951541241296219877120976138 (0x5A6CD506BB51F992C56FAF386378A50A)
Complete name : C:\Users\Lenovo V145-15AST\Videos\4K video.mkv
Format : Matroska
Format version : Version 4
File size : 368 MiB
Duration : 3 min 52 s
Overall bit rate : 13.3 Mb/s
Writing application : Lavf58.20.100
Writing library : Lavf58.20.100
ErrorDetectionType : Per level 1

Video
ID : 1
Format : VP9
Codec ID : V_VP9
Duration : 3 min 51 s
Width : 3 840 pixels
Height : 1 610 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 24.000 FPS
Default : Yes
Forced : No

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : A_AAC-2
Duration : 3 min 52 s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Default : Yes
Forced : No

Your GPU only supports partial hardware accelerated decoding for VP9 video. You could try older or newer version of the AMD driver. Some driver versions have been having issues lately with hardware decoding.