Is "perfectly equal monitors" really required to reclock MCLK

[Braiam]

Hi,

I have two monitors with the current following configuration:

Screen 0: minimum 320 x 200, current 5120 x 1440, maximum 16384 x 16384
DisplayPort-0 connected primary 2560x1440+0+0 (normal left inverted
right x axis y axis) 597mm x 336mm
   2560x1440    164.83 +  59.95 + 120.05*   96.01    72.01    60.01
143.97   120.00    74.97
[snip]
DisplayPort-1 connected 2560x1440+2560+0 (normal left inverted right x
axis y axis) 597mm x 336mm
   2560x1440    165.00 +  59.95 + 120.06*   96.04    72.01    60.01
50.01    48.01   144.00   119.99    99.99
[snip]
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-1 disconnected (normal left inverted right x axis y axis)
DVI-D-0 disconnected (normal left inverted right x axis y axis)

The pp_profile_mode:

NUM        MODE_NAME     SCLK_UP_HYST   SCLK_DOWN_HYST
SCLK_ACTIVE_LEVEL     MCLK_UP_HYST   MCLK_DOWN_HYST MCLK_ACTIVE_LEVEL
  0   BOOTUP_DEFAULT:        -                -                -
         -                -                -
  1 3D_FULL_SCREEN *:        0              100               30
        10               60               25
  2     POWER_SAVING:       10                0               30
         -                -                -
  3            VIDEO:        -                -                -
        10               16               31
  4               VR:        0               11               50
         0              100               10
  5          COMPUTE:        0                5               30
         -                -                -
  6           CUSTOM:        -                -                -
         -                -                -

I have set their refresh rate to 72.01 which is a mode equal for both,
and the MCLK wasn't downclocked either. They are branded HP and
Scepter. Using a vtty doesn't help either.

Is having the exact same monitor really required? If not, how can I
check what is causing
the memory clock to be pegged that high?

I'm using 6.0.0-6-amd64 from Debian testing.

-- 
Braiam