Linux performances issues CGO

[Julien2313]

Hello,
On my VM on Linux from a Windows host, I have issue on performances directly linked to the size of the windows. The biggest it is, the less FPS I get (TPS are still at 60) while on windows I keep having 144FFS (I have 2 G-Sync monitors)

For the CPU usage, it's around 45% with Linux, 10% on Windows.
Here is on Linux the pproof chart on an example with an empty Draw() and Update():

I found this issue, which looks like to be the same issue as me ? (for the cgo part)
I haven't really find (maybe badly searched) others issues, and so no solution... I don't know if you might know how to solve this, or if I'm doomed ?

Thank you for your time!
Julien

[hajimehoshi]

Usually, the overhead of Cgo is the heaviest task in most applications and your application's state seems healthy. So, I think this is an issue in your graphics drivers in the VM, but I am not 100% sure. Would it be possible to test a Linux machine without a VM?