Premiere Pro CONSTANTLY Freezing with Sufficient Specs (Upgraded to RTX 5090)

I appreciate the fast and thorough response! I had already cleared my drivers using DDU, but i did it after installing the 5090 and running into these issues. However, I did not know that DDU installs game ready drivers after clearing all the others. I cleared my drivers in safemode using DDU and then launched the computer and instantly installed the studio drivers, but I may have to try this again cause i'm thinking i may have done something wrong?

I also checked to see if Premiere Pro 25.3 was available as you mentioned, but I do not see that version available to me. I'm currently on version 25.2.3. The only reason i'm using OpenCL video renderer is because I cannot use CUDA. CUDA will play the video smoothly for 2-3 seconds and then freeze forever, as shown in the gif I posted in past replies.

You also asked if there are effects on the clips I showed in the gif, and there are a few effects and color correcting applied, but this issue is happening on all of my projects, no matter if there are effects or not.

are there any effects on the clip itself?   also try rendering a proxy and see if that makes it better...  (in addition to my other response).

The first thing I would do is see if PP 25.3 update is available to you;  second, do a proper remove of all your nVidia drivers, you cant use the clean install selection within the driver installer, its not really a true clean install;  I just posted this for someone else a few min ago;  use this tool (or one like it that you prefer):

Display Driver Uninstaller (DDU) download version 18.1.1.4

then install the STUDIO driver, I'm sure you already knew this, but thought it worth a mention as when you clean the old driver out with that tool; the driver installer defaults to game ready, and you have to select studio driver again.

I also had a similar issue to you for the playback;  I have not tried 25.3 yet to see if it solves my issue, but it had something to do with premier making what I think was an error in decoding the frame rates, but a manual override of the frame rate solved my issue (I will test 25.3 shortly and see if the problem is solved for me)

The best practice when swapping GPU's especially AMD to nVidia is to do that video driver sanitizing process noted.

As for OpenCL,  I would never use that unless there is some specific plug in you use enough to warrant it - CUDA works great, if memory serves me correct OpenCL gets translated into Cuda by the driver, and the new GPU's have so much power you really don't suffer running with Cuda mode... for this sort of tasks enough to worry about it.

I also have a suspicion that the new blackwell GPU's need the updates in PP 25.3 to work to there full effect, from my occasional trips into the beta forum (but reserve the right to be corrected with someone who follows it closer).

I suspect 25.3 will help you, and a clean driver install as described above will help narrow the issues down for you.

I hope to hear back one of these suggested solve it for you.

Just to add onto this a little bit more, here is a perfect example of the issue I'm facing: 
https://gyazo.com/ccd9419e35930d55784ac747c9a55da3

As you can see from the gif, the playback does not want to update at all, even if I gave it minutes between moving the playhead, it still would not update. The only way i can get it to update is by switching to OpenCL video renderer, but then it's nearly impossible to edit cause the playbackk looks like a slideshow compared to CUDA video renderer.