Same again today. I have six receiver feeds configured (made of three feeders so ADS-B and MLAT from each). Two more feeds, one from ADSBExchange using JSON and one from ADSBHub using Compressed VRS. Both these last two inputs are hidden from the map, I'm only using them to build up my database using the database writer plugin.
Is it possible I'm overloading things? My PC has a fast SSD so it shouldn't be too slow and as you can see from the previous screenshots, I'm not thrashing the CPU or eating all the memory.
I've just disabled the ADSBExchange feed to see if that makes any difference.
Is Virtual Radar Server not behaving itself? If so then please report it here.