Bottleneck?
Bottleneck?
This could clarify a few points. Because the monitor can't change its refresh rate automatically, you're limited to a constant setting. As a game's frame rate changes, it might not match the refresh rate properly, causing a less smooth feel. Regarding blurring or sharpening, it seems textures are loading on demand, though I shouldn't say too much about that. In terms of performance, you could attempt to cap games at 60 frames per second and set your monitor to 60Hz with VSync enabled, which might improve overall fluidity.
Your concern seems to relate to texture loading rather than a CPU issue, though it could also involve the GPU.
Texture pop-in is a design feature of a lot of game engines today. It's to make sure the game runs smoothly if the intended assets aren't loaded yet. Otherwise you'll have hiccups and stuttering as the GPU waits for the high quality assets to be loaded in VRAM.
Texture pop-in can be mitigated with faster storage and maybe more VRAM depending on how high of a quality you were asking for, but that's about it.