How to stop model from glitching when selecting a joint?

So this has been happening to almost every rig Ive tried and right now im using the Neka rig. Every time I select a joint or click the empty space, the model keeps glitching and popping out and the only way to get rid of it, is by clicking on the timeline. its SUPER annoying. Every single thing I click on the viewport or model makes everything glitch out. I cant even properly aniamte bc everything is going crazy. also glitches Way more than other models have glitched. but I have no idea where to start or look to make it stop. I looked on Maya support but couldnt really find anything to help :( anyone know what i should do?

I also created layers for the model so that I didn't keep selecting the actual model and only the rig. but even when deleting those layers its still glitching.

Its weird because Ive used computers at my college and it doesnt seem to glitch on the computers there, but my PC works fine, runs smoothly with games, so i rally dont know what it could be....