All my settings are at the highest level. I can play the game smoothly on my computer. The only problem I have is that the graphics quality is not 1080p but 720p or even 480p. The graphics and text on my screen look very blurry. I don't realize anything over a long distance.
Here is the solution to the problem of blur in the Apex Legends!
If you set “Adaptive Resolution FPS Target" to 0 in the ADVANCED section of Apex Legends' graphic settings, the problem is solved.
Also, if you have low fps issues in Apex, you should check the Apex Legends FPS Boost Guide.