High resolution for menu, lower resolution for emulators

Is it possible to lower the display resolution for each emulator without changing the resolution for the main menu? I’m using Lakka on a Raspberry Pi Zero W, it’s a bit slow on the default resolution for some emulators (SNES mainly). I’ve tried modifying the resolution using the config.txt file lines hdmi_mode and hdmi_group. These speed the emulators considerably, but then the main menu looks pretty bad.

I’m not sure how to have 1280x720 for the menu, but 640x480 (or lower, not sure if that is possible) for the emulators. I feel like this would work much better, menu would look great and the games would have good speed.

Thank you!

You can try setting video_fullscreen_x and video_fullscreen_y to 640 and 480, respectively, in overrides. It should try to snap to that resolution once content is loaded.