Insta360 One X2 - Export Quality Poor from Insta Studio?

Hi all

I have an Insta One X2 which is still fairly new to me - but I'm a bit disaopointed in the export quality from Studio. Watching the clips in Studio they are sharp and non-aliased / not pixelated but however i export (the full 360 style video) in h264/h265 full bitrates a) the file seems bigger than the original and b) the quality is just gash in comparison - soft and flat and somewhat pixellated. Quality settings are at their highest but its just not comparable to the source video.

Anyone else noticed this?

Thanks