"The issue is not with EG (technically) It is with windows. Specifically with how windows handles it's power state changes and notifications of the programs when this state changes.
When windows goes into Sleep/Hibernate/Standby basically any kind of a lower power consumption state this issue will arise. When windows goes into one of these states it will power down your devices and notify the programs.
These 2 things happen at the same time. but depending on how many applications you have running and what order you started them in is going to make this a ghost problem. it will sometimes happen and sometimes not. Also the speed of your computer has to deal with it as well. But essentially what is happening is the devices are getting powered down before EG gets the notification of the power state change. If you have EG as one of the first things to run you will be less likely to have this problem. Not 100% guarantee tho. So EG sees the devices get unplugged and then the computer goes into a low power state.
When the computer resumes the same thing happens with the devices power being turned back on and the applications being told to start running again.
In some cases the devices will get plugged back in (powered on) before EG resumes so it never sees the devices get added. so it thinks they are still removed from the system. This is the reason why they stop working in EG.
The fix. Buy a faster computer.. and run less programs, and don't have so many devices...
LOL... nah.. I'm joking.
What we need to do is to adjust the power settings. specifically for USB. this is done in 3 places.. the first place being the BIOS of your computer. now this I am not going to be able to give you simple instruction to many variations out there. But poke about you will find the settings.
The second place is Power Options in the control panel. We want to change the Power Profile (Plan). You will need to Create a power plan and you can select any of the 3 options. these are templates. when done with creating it you will want to change the plan settings. in little tiny print you will see Change advanced power settings. You will need to change any and all setting in here that are related to the USB make sure anything that is trying to manage or turn off power or suspend power is turned off.
The 3rd place is in the device manager. this again is one you are going to have to poke about a bit. But you will want to cruz through all of the devices in the Universal Serial Bus Controllers section do to the properties of each item. if you see a power management tab click on it and make sure that the Allow the computer to turn off this device to save power is unchecked.
doing this will ensure that when you PC goes to sleep or standby it will not turn off the power to the USB devices. this will ensure that the devices are present all the time.
If this is not working for you then drop a line and we can walk through and find out what is causing the issue."
If need be start a thread over there. The Emby forums are great but EG forums might be a little better in your case