Problems with GTX970. Low frame rate.

[dcaiman]

In a project with 1920 x 1080 resolume 4.2.1 in a osx 10.10.4 shows an output frame rate of 60 fps.
All internal content is DXV3 1080 format.

When active a video signal from a Blackmagic live, the low output frame rate to 19 fps.

We tested several blackmagic with the same result (19fps).
- Studio DeckLink 4K - DeckLink SDI 4K - UltraStudio SDI - Intensity Shuttle for USB 3.0 -

This problem occurs in two different computers.
Mac Pro 5.1 with 16GB RAM and i7 Hackintosh with 4790 K with 16Gb RAM.

If we use two computers in 770 or 680 Nvidia cards and blackmagic live video activated, the output frame rate remains at 60 fps. (nvidia drivers not installed)

Using the Nvidia 770 or 680 cards with Nvidia driver drops the frame rate to 19fps.

Is it a compatibility problem resolume with Nvidia drivers?

[dirtyjohn_lv]

Which version of the card do you have? Read the nvidia forums, TONS of problems regarding the 970

[dcaiman]

The version of nvidia GTX 970 is:

NVIDIA GeForce GTX 970:

Modelo de chipset: NVIDIA GeForce GTX 970
Tipo: GPU
Bus: PCIe
Anchura de canal PCIe: x4Ͼ
VRAM (total): 4095 MB
Fabricante: NVIDIA (0x10de)
ID del dispositivo: 0x13c2
ID de la revisión: 0x00a1
Revisión de la ROM: VBIOS 84.04.