01-28-2019, 02:20 PM -
Despite the driver issues, half the fps going from a 770 to a vega sounds off. I have a 7870 for example and performance is comparable to my 1050 ti, maybe 2-5 fps slower unless I try to go over 100 fps. One issue to consider is that emulators are very heavy on pci-e IO, so make sure the card is on a full pci-e 3.0 x16 slot. I've seen reports and also experienced it myself that using the primary slot on the motherboard yields far greater performance for example. It would also help to gather performance statistics for the games mostly affected by this so that other users can verify, maybe a config tweak can fix the issues for you.