Above 4G decoding - floaty mouse

[empleat]

My specs:
i5 9600kf
G.skill trident z 3200mhz cl 16, 2x8GB
GeForce RTX™ 3070 VENTUS 3X OC - 8GB Vram
ASUS Z390-i gaming
RM650x

I activated Above 4G decoding in BIOS, after I read it helped with performance. However: my mouse input lag improved when moving from place A to place B - like across a screen! But when doing small adjustments, mouse feels floaty and overall laggy.

This option is meant for GPUs with more VRAM and for resizeable bar. I don't know exactly from how much GB you should turn this on. It is interesting option. But input lag is bad now!

GPU is enabled in msi by default and I have it in pci-e gen3, I have on IOAPIC 24-119 entries.

Any idea why Above 4G decoding cause weird lag?

[howxcore]

My specs:
i5 9600kf
G.skill trident z 3200mhz cl 16, 2x8GB
GeForce RTXâ„¢ 3070 VENTUS 3X OC - 8GB Vram
ASUS Z390-i gaming
RM650x

I activated Above 4G decoding in BIOS, after I read it helped with performance. However: my mouse input lag improved when moving from place A to place B - like across a screen! But when doing small adjustments, mouse feels floaty and overall laggy.

This option is meant for GPUs with more VRAM and for resizeable bar. I don't know exactly from how much GB you should turn this on. It is interesting option. But input lag is bad now!

GPU is enabled in msi by default and I have it in pci-e gen3, I have on IOAPIC 24-119 entries.

Any idea why Above 4G decoding cause weird lag?

If you disable Above 4G decoding, does it go away?

[empleat]

If you disable Above 4G decoding, does it go away?

Yep!

[howxcore]

Yep!

i'd just keep that off until a proper bios update that enables resize bar support officially

[empleat]

i'd just keep that off until a proper bios update that enables resize bar support officially

I don't even have CPU which supports resizable bar, but it also should be enabled for GPUs with large VRAM. Mine 8GB. No idea, if I should enable it. It can be combination of things. I would like to know more, but didn't find much about it.