As expected based on early comments of the slow motion mode on the GH5s, the camera has pronounced aliasing “seen in this video by Max Yuryev” and softness the higher the frame rate goes. Even at 120p it is less detailed than the standard GH5. It may be a function of supersampling in the higher megapixel 20MP GH5 vs the 10.2MP GH5s which is creating the new artifacts.
While the GH5s can shoot up to 192fps without cropping the sensor, anything above that up to 240fps it has a slight sensor crop which further decreases quality. While the VFR mode on the camera is better than most cameras in the price range that attempt the feat, it is of note that the quality instead of increasing or remaining the same as the sister model takes a hit which may kill it as an option for slow motion needs. We still believe the standard GH5 is the best Lumix option even when compared to the G9 in VFR mode.