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One of a game I play (Overwatch, not to mention it) is very slow to load when the computer, using windows 10 x64, has been started for less than [at least] 5 to 10 minutes. VRAM usage is really low and all animations and 3D models in the game take ages to load (when they do, VRAM usage is back to normal).
What may be the cause of it ?
I just changed my graphics card to a GTX1080, so my VRAM is most certainly OK (the problem was here before, too), can my RAM be so old that it becomes unresponsive/slow when it has not "warmed up" ? (it's 2 years old) Can it be tested ?
It may also be windows that slows the computer down with random services at boot, how can I know if it is the case ?
other non-3D applications are not slowed down.
Thanks
Please give us some more details to go on. SSd or classic HD ? How much RAM in the system. What CPU does your computer have? – Tonny – 2016-11-03T16:13:04.307
"What may be the cause of it ?" - It sounds like you are not using the GTX1080 but the iGPU built into your CPU. – Ramhound – 2016-11-03T17:24:27.080
I am not, the game runs very well in ultra at 90fps in full HD - but it runs with what is loaded, so no 3D models, no animations, most of the sound gone ... (My problem has been solved thanks to @andrew 's answer) – Magix – 2016-11-03T17:44:13.357