Hi @Mowlwurf !
Another indirect way of limiting the fps could be to slow down the GPU.
Please refer to NXP’s documentation for i.MX8M Mini: go to Embedded Linux for i.MX Applications Processors | NXP Semiconductors and download the file Documentation from the Linux Kernel version you are using (you can refer to Release Matrix - Kernel/U-Boot Version | Toradex Developer Center to find it out).
From that file you can check i.MX Graphics User’s Guide.
We have never done thorough tests with this approach.
Here is a screenshot of the section from i.MX Graphics User’s Guide where you can find out how to change the GPU’s clock:
Let us know if this helps you.
Best regards,