ROBLOX using CPU instead of GPU for rendering

I was having performance issues in Davidii and Defaultio’s new game, so I decided to look and see what specifically the issue was. It was rendering:

The profiler confirmed this:

I thought that was odd since nobody else in the game was having performance issues, and I have a pretty decent GPU, so I decided to take a look at my task manager, and my CPU was almost at full load. When I had the game unfocused (first half of performance history chart) the usage wasn’t so bad, but when I focused the game it shot up to around 70-90% usage. I looked at the Shift+F1 panel and found that ROBLOX was detecting 0B of video memory as well:

I suspect that ROBLOX is using my CPU for rendering instead of my GPU. The 0B detected VRAM and high(er) CPU usage occurs, immediately, with every game I join – it’s 100% reproducible on my end. I never noticed the issue before yesterday, but I don’t play ROBLOX games frequently, so it could have started a while back. However, I can confirm that this wasn’t always an issue on this PC, and I haven’t changed drivers/hardware recently.

CPU/Integrated GPU: AMD A8-6600K APU
Dedicated GPU: AMD R9 380 4GB
Driver: Radeon ReLive 17.1.2
OS: Windows 10 Pro 64-bit


This happened to me earlier this year, i managed to fix it by going into the GPU’s control panel and assigning the roblox client to render with GPU. Though staff said it was fixed shortly after.


I’ve started having this issue my self…

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Can you please make and upload the microprofiler dump so that I can take a look?