Question AMD iGPU persistent memory usage

[tcsenter]

I have been noticing some issues that seem like resource exhaustion type slow downs when memory usage gets high but still not more than 65% of system memory. I have AMD A10-8770 PRO CPU with integrated "R7" graphics and 16GB DDR4 RAM, of which 1GB is "dedicated" for iGPU (no option to change in BIOS). When I first boot the PC into Windows, usage of this 'dedicated' VRAM is only about 180MB (because nothing requiring much VRAM has been launched). But after using Firefox for a while, VRAM utilization goes to 800+ MB. Even after closing all apps and walking away from the PC for 15, 20, 30 minutes, VRAM utilization stays the same pretty much until I restart the PC, like the AMD graphics driver (or Windows) is not releasing the VRAM. e.g.

 

[lopri]

Mine does not behave that way. Even if it did I am not sure if I understand the "problem," as long as the iGPU stays within the bound of assigned VRAM. RAM is there to be used.

 

[tcsenter]

Mine does not behave that way. Even if it did I am not sure if I understand the "problem," ....

"I have been noticing some issues that seem like resource exhaustion type slow downs..."

 

[VirtualLarry]

This is probably "by design".

Witness that total max "commit charge" in task manager only goes back down on a reboot, not by closing programs.

 

[tcsenter]

Yah it's the only resource utilization that goes fairly "high" during these performance issues. System memory utilization is never above 60% when it begins occurring, sometimes not more than 50%. CPU utilization will be pegged intermittently but briefly, mostly banging around under 30%. It seems mostly after watching some videos on YouTube, I'm not running anything that utilizes 3D rendering/texture memory. Thought it could be Firefox but happens under Edge, too.