Issue with graphic card NVIDIA Geforce GTX 96

[ginoraas]

Hi everyone,
I got a problem (and related panic ). I got a Mac Pro 4.1 early 2009 (El Capitain 10.11.6) with an NVIDIA Geforce GTX 960. Everything worked fine til the last Security Update 2018-002. After that every moving object on my screen is flickering and I can't work anymore. Another person installed the Geforce GTX 960 on my Mac, so I'm not able to figure out where is the problem.

I searched for exaustive topic but I wasn't able to find the right one.

I'm not an expert like most of you out there, I apologize in advance for that!

What happened?
It's a question of drives?
Have I to unistall and re-install the graphic card?

Many thanks for your time and help!

 

[satcomer]

Read the article install Programs from Unidentifiable Places and it should help getting a driver installed correctly!

 

[ginoraas]

Thanks Satcomer, I followed all the instructions.
I uninstalled the web driver and the CUDA driver, then I physically uninstalled and re-installed the GPU: no issues now with flickering moving objects or monitor problems.

Now the problem are performances! All is very slow, I start Premiere Pro 2018 and it takes much more time than before, when the damned Security Update was not upgraded.

Any suggestion? How can I go back to my previous setup and performance?

Many thanks in advance to everyone!