so one of my kids has noticed fps drops playing halo, fortnite and rocket league on my pc. i have noticed doom eternal, warzone and death stranding dipping low fps than normal. and seems my gpu is now running at 8x instead of 16x my mobo is an asus Rog VI Extreme i have tried alot of settings and nothing seems to kick it back to 16x
what's the complete hardware spec? what do you have plugged in and what slots, can't imagine the drop for 16x to 8x to be much of an impact unless you are reliant on CPU RAM graphics buffer, I have a faulty 1080Ti that runs on 4x barely causes any issue bar lower overall framerates than when t was fully functional, no big dips.
its really noticeable in fps games. even tried the card in the other pc kids use and it runs at 16x fine on that my specs are are i9-7980XE rog extreme VI evga 2080ti top slot pcie 16x slot corsair 3200 64gb ram asus stx 2 + daughter board bottom 8x slot to reduce it picking up emi buzz from the gfx card samsung 960 pro1tb nvme samsung 2tb sata ssdx2
Is your board splitting the bandwidth between your main GPU slot and the lower 8x slot as you have a sound card fitted? Just a thought, I know some boards do this /2p
Try re-sit your CPU? i9-7980XE is supposed to be 44 lanes. The mobo manual page 24 says 44 lane CPU should never need to split the top PCIe. Only instance where stop PCIe is split to 8x is with 28-lane CPU. How is your single NVMe drive installed? I see it's got an interesting DIMM.2 mount. Page 9 says M.2_2 on the DIMM.2 mount will make last PCIe slot run at 4x. Different issue but your sound card may not be running at 8x. (what a beast of motherboard, its manual had been an interesting read)
When you have had the freedom of a HEDT board you don't want to go back to normal lane limited boards.
nvme is installed on the mobo it self, i remember on x99 mobos gpu had to be re-inserted a couple of times which i have tried to solve this issue which i have tried. i have re seated to the cpu and also checked if any of the pins are out of place in the socket its all good. its a wierd one, and bugging me gaming performance is not what it was like before
