Strange Backglass server issue with a few tables

[RabidUrko]

My setup is a 2k 32 inch monitor with a 1280 x 1024 backglass monitor, AMD Ryzen 5 4500 CPU and a 1660 Super GPU.

 

I have an issue with a small bit of lag and it is linked in some way to the backglass server, but i have pottered about and cannot find out what is the issue.

 

I get plunger lag on Surf n Safari and slight flipper lag now and again in ACDC and Tommy tables , they are the only ones ive noticed it on up to now, the issue , and ill get to it now, is not on the majority of tables thats whats weird.

 

If i run VPX with the backglass server running and a backglass showing on the backglass monitor i get this lag i was on about, if the server still runs but isnt showing a backglass the playfield has no lag atall.

 

I have tried lowering some settings to see if this was the cause on the backglass features, but its still the same. 

I dont understand how this issue could only be some tables, as i have spoken with someone with the same hardware as me and say they dont have this issue :/

 

Anyone any thoughts on this ? cheers.