@storepeter You can set VAR1 type to double to see graph value. I do not remember exactly it can be shown on a mixed sensor graph. Just give a try.
Enable unique name may differentiate your sensors

@bocmau Have you tried openJDK on Raspberry?

@Matt Thank you so much for the great feedback! I do consider your requirements in mind.

@skywatch in which graph do you face issue? Do you check received messages details?

@bmanos, For now, I do not get any clue.
Can you post your MyController pages?

• Status >> About
• Status >> System Status >> Java virtual machine specification
• Status >> System Status >> Operating System

@bmanos Can you share your JDK and MyController version details?

@Daniele Changing gateway type will not impact your data/settings. I hope you are changing the gateway, the underlying node structure will remain the same.

I recommend taking a backup prior to this action.

@Boggie No, we do not have any Hass.io plugin.
I think you can run MyController on hassOS? Is it different than normal Linux system?

@Matt Thanks for the detailed information. Do you have any custom settings?
If yes, can you share HTML additional headers(on UI) details used in your instance?

@bmanos Can you please create new GitHub issue?