Extremely Slow videoplayback

When I use the video playback it runs extremely slow. it is fine for the first 3 seconds but then it gets super laggy.

This is cause it only uses my cpu (utilization) and not my gpu. ive checked every GPU accel box, unchecked them, changed sequence settings, uninstalled premire and reinstalled, changed driver settings, updated drivers, bios settings, lowered res on the playback, ive done everything that i possibly could find online and nothing worked to try and utilize my gpu rather then CPU. I am in dire need of help and abt to switch to davinci if i dont get a response since davinci has alr proven to run smoothly and properly with my footage but id really like to stick to premiere if i can.

(I use a desktop pc, nvidia graphics card and intel processor, 36gb of ram so my pc specs are not the issue. wont even work with 720p footage)