Check out some of the RK3588-based SBCs. The Orange Pi 5 Plus is a fantastic alternative to the Raspberry Pi 5 if you're okay with a bit of fiddling as mainline kernel support is still a work in progress.
Also, OBS runs great on it, although it’s not taking advantage of the on-board MPP media accelerator (H.264/265 and other codecs). Apparently GStreamer has support for it though and some folks have experimental FFMPEG forks adding support.