topic Horizon Blast FPS limit in Horizon Desktops and Apps

Horizon Blast FPS limit

Lackero — Wed, 30 Aug 2023 13:12:40 GMT

We want to do a performance test in our VDI. The VMs render more than 30 FPS, but only 30 FPS are encoded by Blast. We have tried many things, but there seems to be an FPS limit that we have not been able to turn off yet.

Our environment

Client
VMware Horizon Client 8.8.1

VM
Windows 10 Enterprise 21H2
VMware Horizon Agent 8.8
NVIDIA Guest driver 474.44
vGPU profile RTX8000P-3Q

Host
VMware ESXi, 7.0.3
2x AMD EPYC 9274F
2x Nvidia RTX8000P

What we have set so far:

VM extended option
pciPassthru0.cfg.frame_rate_limiter=0
in the registry of the Winidows 10 VM
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\VMware, Inc.\VMware Blast\Config
EncoderMaxFPS=60 (decimal)

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations
DWMFRAMEINTERVAL=15 (decimal)

However, the VMware performance tracker always shows only 30FPS. No matter what you set for EncoderMaxFPS.

Does anyone know the problem and how can we switch off this FPS limit?
Regrads

Markus

Re: Horizon Blast FPS limit

yotadude1 — Wed, 30 Aug 2023 14:49:53 GMT

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\VMware, Inc.\VMware Blast\Config
EncoderMaxFPS=60

Is set on the Agent or Client? It sounds like you set it on the Agent, I think you set this on the Client.

Re: Horizon Blast FPS limit

JackQianLiu — Thu, 31 Aug 2023 04:07:01 GMT

Reminder that the type of the registry below is string value "REG_SZ". Please set it on remote desktop.

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\VMware, Inc.\VMware Blast\Config
EncoderMaxFPS=60

Re: Horizon Blast FPS limit

Lackero — Thu, 31 Aug 2023 05:41:24 GMT

Thank´s. Now it works.