Modbus coil problem

Third party integrations
1

Hi, I’ve been working on a project using the HA Modbus integration. My Modbus server is running in NodeRed. To connect with this server i use the following config:

modbus:
  - type: tcp
    host: 192.168.2.74
    port: 502
    name: Modbus_Server
    retry_on_empty: true
    delay: 5

Now on with my issue:
Whenever I try to use coils in my config.yaml, for example a binary sensor or a switch using write_type: coil, the time it takes to control the modbus entities dramaticaly increases. If I just use regular registers it takes less than a second to set a coil or register, but when i add a coil type entitiy to my config it takes at least 5 seconds.

Correctly working:

  sensors:
    
#############################################
# Hoofdkast
#############################################

# Waterhoogte voorraadtank grijswater 
    - name: _mod_AI_FilthWater_WaterHeight
      address: 0
      scan_interval: 10
      scale: 0.1
      unique_id: Waterhoogte voorraadtank grijswater 

  switches:
 
# Vloerverwarming Slaapkamer 1
    - name: _mod_O_Heating_Bedroom1
      address: 106
      write_type: holding
      scan_interval: 1      
      unique_id: Vloerverwarming Slaapkamer 1
      verify:

Not working correctly (at least 5 second delay):

  sensors:
    
#############################################
# Hoofdkast
#############################################

# Waterhoogte voorraadtank grijswater 
    - name: _mod_AI_FilthWater_WaterHeight
      address: 0
      scan_interval: 10
      scale: 0.1
      unique_id: Waterhoogte voorraadtank grijswater 

  switches:
 
# Vloerverwarming Slaapkamer 1
    - name: _mod_O_Heating_Bedroom1
      address: 106
      write_type: coil
      scan_interval: 1      
      unique_id: Vloerverwarming Slaapkamer 1
      verify:

This phenomenon only starts appearing when is use more than 10 coil type entities.
Below 10 the delay is not noticable. As my project contains about 200 digital IO i use 200 coils.
When using this many coils (combination of switches and binary_sensors), the delay is about 10 seconds.
Again, when I just use registers instead of coils there is no delay.
Thank you very much!